Halo 2 cheats: Missions

Note: Button presses are described in Xbox version format. Use the equivalent key on the PC keyboard when playing that version.

Arbiter: Grunts Birthday Party mode:
Play the mission under the legendary difficulty setting. Proceed until you reach the first Banshee section. Immediately fly straight down to the bottom of the level. Search the cracks where the large cylinders connect to the station to find a circle of Grunts dancing around a skull. Get the skull and the words "Grunt Birthday Party" will appear. When you get the skull, all headshots that kill the enemies will cause them to explode as if a plasma grenade were attached to them. This works well if you aim for a Grunt in the middle of a group of enemies. Also, this may only work for projectile weapons, but does work for the Covenent carbine and the Covenent sniper rifle.
Mike Van Zandbergen.

Arbiter: Bouncing grenades:
Immediately after your first battle, you will go into an elevator. Press the button that reads "Hold X to activate elevator", then turn to the wall. Throw plasma grenades at the wall while the elevator is moving down. The grenades will bounce off and hit the ground bouncing up and down.
CanncoFloral.

Armory: Easy completion:
When playing under the legendary difficulty setting, get to the part where you are in the shuttle bay where the Covenant have boarding craft attached. You can complete this level in two ways. The first is to kill the Grunts with the battle rifle, then pick up a plasma pistol. Use the plasma pistol to lower the Elite's shields, then quickly take out the battle rifle and kill them before they take cover. The other method is to get a number of plasma grenades and stick them on Grunts. They will run to the Elites and kill them.
Austin Guidry.

Armory: Skull:
Under the legendary difficulty setting, complete the orders until someone asks you to go in the elevator. Wait until he says "Will you come in if I say please?" and walk in. When you get into the tram, face the Earth and hug the wall. Hold X for the entire ride. Eventually you will pick up a skull that says no clue to what it does (no word will appear, as with the other hidden skulls). Note: You cannot keep it as a weapon, as it is taken away after the intermission sequence. However, you can beat up the man with it. This skull appears to make enemies more aware of your location.
Digital Chao and CHEEZY PRETZEL.

Armory: Hidden areas:
On any difficulty setting, get to the air lock room with the two jet troop Elites. Shoot The first two Elites. Once outside, shoot the third. Then, go toward the gray shuttle docked just outside the air lock chamber. Jump on it and it will allow you to go to hidden areas.
LajanL.

Ascension: Sniping location:
There is a great sniper location in the Ascension multi-player level. Get the sniper rifle and an SMG or a rocket launcher and grab the Banshee. Fly to the space between the two slanted forklift-type things immediately above where you would start if you were player one. Land, and get out. The Banshee will probably fall. Run up the slanted area and you can see the entire field. Because you cannot die from high places, you can drop down for a reload then fly back up.
Ne034.

Use the Banshee and fly up to the two poles above Sniper's Roost. Make sure you have a sniper rifle.
Maxmax820.

Take the Banshee and park it on top of the tower with two beams coming out of its top. There should be a good location for your Banshee at the beginning of the two beams. On a team, have one person takes one and the other use the other beam. Remember to go to the end of them to get the best view. If you are alone, you have an advantage. If someone starts shooting at you, you can jump to the other side. You should be too far away for them to notice. If you fall off, take the rocket launcher or duel SMGs to protect yourself.
DE MASK.

Ascension: Boost jumping to the top of the highest tower:
Walk over to the ramp up to the main tower. There should be a ramp down to the lower level. Turn towards the bottom ramp and make an immediate left. There should be a pillar that separates the bottom ramp from the top ramp. Make you crouch and walk into the corner of the pillar, and the wall that keeps you from falling off the level. Walk until the screen starts shaking. Then, stand up and make a U-turn around the rocks that were to your immediate left (if you were walking into the correct corner). Run all the way to the edge where there should be a rock to your left (again). When you look down, there should be a crack that divides the dirt from the ramp that goes to the main tower. Jump off and land directly in the center of that crack. If you jump in the wrong place you could cause yourself a death by falling through the floor and being killed by the guardians. This may require a few attempts.
USJ4TRUNKS.

Battle Creek: Hidden weapon:
Go to the Blue base. Run to the end of the base where the ramp is located. Tilt your gun to the bottom in the "northeast" direction. You should see the "Hold X to pick up weapon" message. Hold X to pick it up. This is a hidden weapon which is useful when cornered without any ammunition.
.

Battle Creek: Hidden message:
At the location where you pick up the sniper, there is a hidden message under one of the rocks.
the neighborhood friendly Baconlover.

Beaver Creek: Hidden message:
In multi-player mode, go to the sniping location where you are able to push the rocks down in to the creek. Roll down all the rocks and look at the spots along the wall where the rocks were placed. You will find a message that reads "Why am I here" with someone's initials under it.
UrbanRumble.

Beaver Creek: Fast Capture The Flag:
Go through the teleporter at your base, then get on top of your enemy's base. Break the glass that is over the flag. Throw grenades down because someone might be guarding the flag. Once they are killed, have one person get the flag and throw it up to the person on the roof. Take the flag through the teleporter and get on your base's roof. Break the glass that is closest to your score location, and score. Note: This works well in double team mode.
PepperSpray497.

Burial Mounds: Sniping location:
There is only one sniper spot, and one turret. If you are on a team, try to stay in the turret and on the following sniping spot. When you are alone, just take the sniper spot. To get to this sniper spot, take a Ghost and use boost to get on top of the sand hill on the side of the level, around the purple machine things.
DE MASK.

Burial Mounds: Hidden image:
There is a hidden image of a ship and a sword combined. You will need overshields, a Wraith, and two players to see it. Go to where the Ghost responds and move it. Have someone jump in the Wraith and the other put their back against the structure where the Ghost respawns. Have the person against the structure crouch up and down and walk backwards, The structure may hold their crouch so they may need to come forward slightly. However, keep going backward. When they do that, the person in the Wraith should boost at them and knock them into the structure. The person against the structure will die. After they die, have them quickly come back to the location and look up. You will see the dark form of a ship and a glittering energy sword in the sky. This may require a few attempts.
underdawg253.

Start a multi-player game with at least two players and a Wraith. Go to the center area where normally a Ghost would spawn. At the flaming piece of wreckage, have one player stand at a side of it with the player's back to it. Continuously walk backwards into it while crouching. Note: It is recommended that you take the walls that do not make you crouch into a den to get stuck in. Have the other player get a Wraith and go directly in front of the player at the wreckage. Boost-ram into the walking player. If done correctly, you will fall into the structure. Note: Your character while falling in the structure must hit an invisible object. If he does not, you must start over. If he does, your dead body will fall and land on the map from the sky, much larger! This also works if your weapon happens to hit the object.
Crystaline.

Cairo Station: Thunderstorm Skull:
Play the level under the legendary difficulty setting. Play through the level until you reach the second room where the Covenant are boarding. The game will say "Priority Shift". Go through the Armory and take out the Elites. Then, go to the "Commons B.01" and clear out all enemies on the ground floor and the Grunts on the far side manning the plasma turrets. Once the room is clear, look into space. You should see the dual tram tracks. Note that the supports in the center are close together. One of those diagonal supports goes down the side of the wall where the glass railing is locaed. Jump on the post for the glass railing and jump onto the diagonal support. From there, jump onto the tram track and follow it all the way down towards the door you originally came in. You should see a landing with a trash can. The skull is in this trash can. Walk up to the trash can and hold X to pick up this skull. The word "Thunderstorm" will appear. This skull causes all Covenant enemies to be Spec Ops.
Angilas89.

Cairo Station: Secret message:
Before attempting to perform this, make sure that the Sputnik Skull is in effect. Make your way through the level until you reach to the section entitled "Authorized Personnel Only." Continue forward until you see a slanted pillar(it will not be far from the opening of the air lock). Jump on the ramp and walk up to the top of the pillar. You should be on a ledge. Grenade jump on top of the wall. A little to the left you should see a Covenant ship. This means that you are in the correct location. Continue left on the top of the wall until you are above three slanted pillars. Just past the third pillar, fall down onto a circular platform to the left. Continue walking across the two glass floors until you reach a platform. Jump on the platform, duck down, and turn on your flashlight. You should see the engraved words "IN AMYS SHAD".
Gatman.

Cairo Station: Plasma Pistols:
Plasma Pistols can be your best friend on Cairo Station. Grunts carry these and drop them quite frequently. When charged, it takes out almost any shield. Combined with a Battle Rifle, you can tear through the boarding parties and continue to Earth. This works on almost all levels, but Battle Rifles become less frequent the further you are in the game.
Kevin James.

Coagulation: Sniping location:
At the Red base, get a Banshee. Get on top and face toward the Blue base. Turn right and go over. Follow the wall up and close to the top. You can get out there and snipe from this location.
Ericcc69.

Find a Banshee and a sniper rifle. Fly to the Red base. Turn so that you looking at the Blue base, and then look to the right. You should see the boundaries. Fly over to the wall and you should see a slant. Land on the slant and you should be able to snipe from there.
JaCkAlXiI.

Go to the Blue base and when looking towards the Red base, look to the right. You should see a shadow from a big piece of rock sticking up. This is a good sniping spot, because when you are in danger you can hide behind the piece of rock sticking up. A Banshee is needed to reach this location.
AsianAssassin11.

Near the Blue base there is a sniping location at Mt. Erectus. You can get up there with a Banshee, Ghost or a Specter.
Mlam138168.

The best sniper spot is at the Blue base (the one with all the shadows), on the rocks above. Fly your Banshee there and land on a flat rock. You will be covered by shadows and have a view of the entire level.
DE MASK.

Go to the Blue base. Face away from the Red base so that you are looking at the wall. When facing the wall, look at the ring. At the part where the ring touches the wall is a location where you can land. Get the Banshee and go to that spot. This may take a few attempts, as it is difficult to land there. The Banshee will fall, but you will have the perfect location to snipe. When crouching there you will almost be invisible. You will just be a speck on the wall.
Shawn Falk.

Get in a Banshee and fly against the mountain until you see a rock sticking out. Ride the Banshee into it then get out. You can use snipe from this location. This is useful for capture the flag or slayer mode games.
Ben Bowler.

Coagulation: Hiding location:
Go to the Red base and search around outside until you reach a green teleporter with trees around it. You should find a cave of some sort. Enter and walk through one of the two smaller tunnels. You should see a small patch of water with either an overshield or camouflage power-up in the middle of it. This is a very good place to hide when your shields are down You can also take vehicles in here for safekeeping.
Skull King 192.

Coagulation: Extra penalties:
For the primary heavy vehicle, select Scorpion tank from the quick options. Next, select CTF and have you and a friend(s) on the same team. Go to the Red base with a Scorpion tank. You will be able to climb up the mountain with this vehicle. You can do one of three things. The first is to bring lots of friends, and have everyone hide behind the tank and snipe. The second option is to go up there by yourself. You can stay up there, and it is very hard to be seen. You can shoot invaders coming towards your base with the rocket blast and the machine gun. The last option is to have a friend wait just below the top of the hill. Go up the hill with the tank until you can not go up any further. The tank should do a backflip. If the tank lands on your friend, the message "<player's name> was killed by the guardians" will appear. The next time someone from the other team kills either the person who was originally in the tank, or the person who the tank landed on, they will get hit up for a suicide penalty, a betrayal penalty, and the regular death penalty. This can help greatly in online play.
Martin Morales.

Coagulation: Orbiting rockets:
Start a game with rockets in multi-player mode with two people. Have one person drive a Warthog to the larger hill near the rocket launcher that is usually in the middle (near the cave). Have him sit in the Warthog on top of the hill. Have the other person lock on to him at a distance about two to four Warthog lengths away, depending on the exact spot that you are standing, with his back to the large rocks in the center of the level. Have the person outside the warthog lock on to the Warthog. Make sure to keep the reticule on the Warthog. At the fourth beep, quickly look to the right and fire far away from the Warthog. The rocket will circle around the Warthog, but never hit it. It will eventually disappear. This works with any other vehicle, but a Warthog is recommended for beginners. It may require a few attempts to perfect. When performing the orbiting rockets, they will always face the targeted object as they orbit.
Hunter e.

Coagulation: Flying tank:
Have a Wraith and tank. Have a friend with you on the same team and no friendly fire on. Get your friend and yourself in both tanks and get both of them to hit each other. When the tank is barely on top of the Wraith, use the turbo on the Wraith. It should send the tank and your friend spinning and bouncing everywhere.
Jack Bess.

Coagulation: Hidden message:
Take the warp that puts you at the mouth of the cave. Enter the cave. There are two openings down to the overshield. If you go to the one on the left, you can see a message in the rock that says something similar to "Stan was not here".
the neighborhood friendly Baconlover.

Go to the three trees, then into the cave. Search the left cave on the left side and you should see the message "not sid was here".
elizabeth_mccull.

Coagulation: Hidden woman:
In multi-player mode, there are three rocks in front of the Red base. One is pointing toward the Blue base, one pointing right towards a dark area by a rock wall, and one pointing left to the big cliff edge. Go between the rocks and look at the one pointing towards the cliff. If you look closely, you can see a woman.
Joshua Altstadt.

Containment: Face in the sky:
With a sniper, get to an area where you can see the Halo in the sky. On each side of it, there is a face, but you can see it when you zoom in.
the neighborhood friendly Baconlover.

Containment: Sniping location:
Look near either base from the gate switch. Turn to your right, look up, and you will see a large outcropping. Get in a Banshee and fly to the top of the outcropping.
Wbsurfer61.

Note: This will be easier if you have a second person on top of the closeable gate watching, so you can have a third person view. To get to this location, there are certain conditions. You must be at the Red base (or at least be able to remain there if you are Blue). You must also have a Spectre, a sniper or beam rifle, a rocket launcher, and at least three of each grenade. When you are at Red base (the one without light blue blotches all over its walls), get in the Spectre at its starting point. Turn around. You will see a small ramp that leads to another ramp and to the top floor. On the left side of that ramp is a rock wall. Line the Spectre up with the bottom right corner of the slope and the top left corner. Move your view all the way up as far as it can go. Then, go straight while boosting right into the wall. Never stop boosting. If done correctly you will cling to the wall. Go up a short distance then turn left. This is where you will need a second person watching. At the bottom on the ground are three rocks (a short stubby one, a long one, and another short stubby one). The Spectre should go slightly bit past the third rock (if counting from right to left). You should be adjacent with another rock wall. Then, go up. If you follow parallel to that other wall while going up, when you reach near the top there will be an "invisible hole" in the "invisible wall", just big enough for the Spectre. From there, you can snipe people and blow up tanks and Banshees that may discover you. This is where the grenades are used. Make sure you keep one rocket with you, in case this fails. When you run out of ammunition, you must kill yourself if you cannot reach the hole again. Use the grenades first. If they do not work, use a rocket. If you are in split-screen mode, turn on team changing in game variants so that you can just change teams to kill yourself without losing a point. If on Xbox Live and you fail to kill yourself, you will be stuck -- nobody really looks up there and you will not get killed.
eovnu87435ds.

Containment: Run very fast:
Use the following trick to can run very fast for a short period of time. First, find a fusion core and one of the brown metallic ramps in the center of the map. Run into (but do not hit) the fusion core. Continue running into it to keep it moving. Run the core up one of the center brown ramps, run it across it, then back down. When you run back down with the ramp (with the fusion core still in front of you) you will run over the top of the core. This will propel you very fast in the direction you were running.
FiveSedwick.

Delta Halo: Envy Skull:
Play the mission under the legendary difficulty setting. Continue until reaching the area during the "push through the covenant held ruins" phase where a landing zone for the Pelican to drop weapons must be cleared. When you reach the area where Cortana says "They're pouring out of the center building", note the plasma turrets along the borders. A short distance after the turret on the left side is the outline of a sealed door in a wall. There is a rock in front of the door. Jump on the rock, then jump onto the ledge above the door. Next, jump to the ledge to the left. Then, grenade jump onto the building with the sealed door. On the roof of the building are two dancing Elites and a skull. Get the skull and the word "Envy" will be displayed. You can now use active camouflage.
HeavyD.

Delta Halo: Warthog:
In the beginning of the level when you are storming the hill, it may be tempting to pass by this part. However, stay in that area until you survive both waves of Covenant that the Phantoms drop off. A Pelican will appear afterwards and drop off a Warthog for you and your teammates.
Calzone.

Delta Halo: Tank launch:
Note: This trick works better under the easy difficulty setting so that the tank does not get beat up as much. Play through the level until reaching the point where the Pelican drops the tank. Get in the tank and continue until reaching the part where you normally have to leave of the tank to complete the level. There are lots of stationary plasma shields and weapon containers drooped by the Pelican. Destroy all of the plasma shields with the tank, then quickly park it on the empty shield generators. Do not move. Wait until they have respawned, then move. You either will be thrown up into the air or intently killed. Also, if it flips your tank over and you automatically get out, quickly press X to flip the tank and you may be smacked up into the air.
BMGTHEGAMER.

Delta Halo: Hidden swords:
Follow the path for the "Delta Halo: Envy mode" trick. Once you reach where the skull is located, turn to the right and jump down. Then turn around and go through the doorway. There should be two swords and two dead Grunts.
zertoil1.

Play through the mission until it says "Off The Rock, Through The Bush, Nothing But Jackal". Jump down from the waterfall and follow the stream to where it ends. There should be an energy sword here.
Gunz-rule.

Have the Sputnik Skull activated. Go to where you obtained the Envy Skull and go to the part were a giant rock is in front of the door. Instead of getting on top of the roofs, stand between the rock and the wall. Melee the rock out of your way to get the two swords.
marcus and brandon.

Delta Halo: Hidden sniper:
When you reach a hall before the fortress with an hologram of the prophet, there will be a gray wall behind you. With a help of a friend, climb the wall, then search a bush. There will be a sniper, ammunition, and a dead Marine.
brian bojorquez.

Delta Halo: Sniping practice:
Near the end of the level, before you go down the ramp to the temple, take out your sniper rifle or get the beam rifle next to the rock. To the left of the temple, there will be a bridge-like structure with two Elites and a pair Of jackals patrolling. To the right will be another bridge with two Grunts, a Jackal (on higher difficulties he may be another sniper), and another Elite. You can snipe them, and at the next level have less enemies to worry about.
Acavina.

Delta Halo: Grunt Actions:
In the opening sequence of the level, you will see a Jackal talking with a Grunt. Under the easy and normal difficulty settings, the grunt is rolling his finger in the dirt. Under the heroic difficulty setting, the Grunt is playing with fire. Under the legendary difficulty setting, the Grunt is playing with some kind of doll.
Acavina.

Foundation: Easy kills:
There is normally a Ghost and Warthog on the lower level. To get one of them to the upper levels, drive it into one of the air units that makes you fly up. It is strong enough to bring up a Warthog or Ghost. You can now drive around the circle and run over anyone standing there.
Hafcafraf.

Foundation: Hidden images:
Go to the bottom of the level. Go to any of the gray pillars and look closely. You can see the Halo 2 symbol. Also, if you look through one of the wind tunnels, you will be able to see a faint image of Master Chief.
Bslayer13.

Go to the lower part of the level. Look for a gray door with a crack on the floor in front of it. Once you find the door look at it. It will have a drawing of a monkey on a bomb.
Jetblast14.

Foundation: Hidden message:
Read the description. It says it was the training facility for the Tactical Autonomous Robotic Defense System. Put that in shortened military terms by using only the first letters of the words to see that it spells "T.A.R.D.S.".
Steven Lee.

Foundation: Zombies strategies:
There are many different strategies to use while playing Zombies on Foundation. First of all, if the weapons are set on Magnums, get as much ammunition as possible and about three Magnums. This is useful because you can hide in a room and duel wield the Magnums with full clips and still have another on secondary. You will not have to go outside as much, which therefore protects you longer. You should try to repeat this on any weapon setting, unless you cannot duel wield them, then get two with full ammo.
underdawg253.

Use the following strategy to hide. First, get a warthog (if available) into room 4. Then, proceed to move the boxes at the back of the room in front of the door, creating a "barrier" in which you must crouch to get over.This gives you time to shoot.
underdawg253.

Gravemind: Angry Skull:
Play the level under the legendary difficulty setting. Fight your way through the Covenant city until you are outdoors. As soon as you are outside, turn right. You will see some Covenant crates next to a rock ledge. Jump from the crate to the ledge. Walk up the hill, and to your right will be a red girder. Jump on the girder and follow it back towards the area you just came from. There will be a cloaked Grunt with a fuel rod cannon. Kill him and continue down the girder. You will see a skull floating above a small gravity lift. If you get this skull, the word "Angry" will appear. This will make Grunts shoot faster, but you can use it as a blunt weapon. The Angry skull is the only skull you can cycle around as a third weapon.
Angilas89.

Gravemind: Beamsword:
At the point where Cortana reverses the first gravity lift, there is a dead Elite that can be seen as you are going down. Usually you must do this at least twice to get the angle of which to jump correct. Jump into the reversed gravity lift and hold or tap Jump while pressing Forward. You should break free of the gravity lift and land near a dead Elite with white armor. Take the Beamsword and hop back in the lift to proceed with the mission. This makes it easier to keep your soldiers alive through the close quarters and hallways.
Sean Cranford.

Gravemind: Shortcut:
As you are walking past a certain point, you will reach the teleporting bridge that glides you across to the other side. After you come out of a door with an overhang or see one like it, try to push a crate up to it. Jump on top of it. Once on top, try to jump on top of the red bars. Then, jump over to the big stretch of white trellis and walk on it all the way over to the other side. You can do this multiple times. and it is a good way to avoid the battles with the Elites, Grunts, Brutes, etc.
kenny overmyer.

Gravemind: Man in boxers:
Under the legendary difficulty setting, watch the intermission sequence where the Brute honor guards are attacking the Grunts and Jackals. When you see the Grunt climb on the pillar, the camera will pan to the right and show some Grunts jumping. You can see a man in boxers with the grunts.
Acavina.

Gravemind: Screaming Marines:
Get to the point where you release the Marines from the jails. Before you go down the lift, put one of the large boxes over the one that goes up. After you release the Marines jump up to that level (grenade jump or get creative). The Marines will try to go up. Then, jump back down and look at the lift. All of the Marines should be stuck. Their mouths will move and make a really strange sound. Shoot them one at a time. They will cringe, screamm and moan in unison.
jbchrobak.

The Great Journey: Black Eye Skull:
Play the level under the legendary difficulty setting. Eventually you have to escort the Sarge who is in a Scarab. Follow him along until you see the huge compound in front of you. Directly above the door that the Sarge blows open with the Scarab is an angled beam. Land your Banshee on this beam and walk to the top of it. Look down and to your left to see a circular angled wall. Jump onto this wall and walk to the top. Walk straight along the right-hand side of this area. You will have to jump over a small beam in front of you. Continue walking straight until you come to a grassy area. Keep walking up the grassy hill and go until you reach the point where can jump onto the angled support where the tower meets the grass. Jump onto the support and walk up the support. It is a very steep climb; jumping while you are going up the support speeds it up somewhat. At the first landing, you will see the Black Eye skull sitting on a glowing white panel on the floor. This skull makes your shield charge abnormally. To charge your shields you must melee enemies. You can charge your shields into the overcharge range by doing this.
Angilas89.

The Great Journey: Sniping location:
Play until you reach the part where the Scarab is going to blow open the door. Then, fly your Banshee down to the water and get out. Walk into the water and you will be invisible to your opponents. However, you will be able to see them, making this the perfect place to go under the legendary difficulty setting to kill your enemies without them seeing you. You may also take a Ghost or a Spectre down here. If you are skilled enough, you can even take them up very close to the top of the structure.
mitch smith.

The Great Journey: Pass from Scarab part to Boss:
When the Scarab blasts the door open, take your Banshee and fly to the right of the tower. When you reach a slanted part of the wall, fly as high as you can (hugging the wall), and turn your Banshee sideways. Get out. Climb up the slant and you can skip the part when you face the Brutes and land in the Boss room. This is very helpful if playing under the heroic or legendary difficulty setting. Note: Do the same on the left side under the legendary difficulty setting to find a skull.
De Mask.

The Great Journey: Get past Brute force:
After the Scarab blows down the door, go in as usual. When you get to the door that leads to the area where you meet them, stay to the right. Do not stop. Stay to the right. jump over them, and do not fight. If done correctly, the doors should not be fully closed, and when you get to them they should open again. Go in and you are done with them and can continue on to Tartarus. Note: Do this as quickly as possible, otherwise the doors will shut.
Raven.

The Great Journey: Shortcut:
There is a shortcut at the end. When Sgt. Johnson blows down the door to inside the activation building, stay in your Banshee. Go to the right of the building but do not go in. Go to the top of the building still in your Banshee and just a little to the right. Stay there. It will take you directly to the control room where Tartarus is located. When you start, turn around and get the Banshee. You can use it to kill Tartarus.
BUDRACINGFAN0803.

The Great Journey: Hitch a ride:
Get to the part where you fly the Banshee and protect the Scarab. When the Scarab stops at the water, a ship will arrive and drop off a Wraith. If you are still in the Banshee, go on top of the drop ship then get out. You should bounce a little. Try to land on the ship. If done correctly you can hitch a ride out to sea. The drop ship will eventually disappear after going out too far.
Bushhead.

The Great Journey: Ride the Scarab:
On the last level, The Great Journey, you can actually ride the Scarab. When you get your Banshee, fly over and just get out on the Scarab. You are now free to ride. Your Banshee will most likely fall off, but you can hijack the ones that appear later. The enemies are harder to take out if it is just one player doing this, and you may waste your ammunition at the moment. It is fun, but you must hijack a Banshee in the end to finish the level.
Spartan 217.

On the level, The Great Journey, you can ride the Scarab until the end of that section, when you are in front of the control room. By riding the Scarab, you will skip the major sections of the level. This is helpful when playing under the legendary difficulty setting. When you ride the Scarab you probably will not have a Banshee, but by following these steps, you can get one and fly over to the control room (for the Black Eye Skull or just to skip the other parts of the level). When you ride the Scarab, just before reaching the control room you will encounter checkpoints. When you get to the last checkpoint before you blow open the door, run to the right side of the Scarab and jump onto the joint of its "leg", then jump onto the structure to the immediate right. By doing this, you will safely reach the ground. Instead of running to the Banshee there in the open, hug the cliff wall and go backwards through the level. The Banshee in the open will most likely get you shot down and killed. Before a cliff that you climb down is one of the Heretic Banshees. It is slightly beat up, but you can ride it all the way to the end of the level if you are skilled enough. Note: Beginners should not try this trick, as it requires patience and skill much higher than that of someone playing under the easy or normal difficulty settings. This trick is meant for the heroic or legendary difficulty settings.
lilpyroman626.

You do not have to lose your Banshee and find another while riding the Scarab. When you first get your Banshee, hop into it and destroy the Wraiths just ahead. This will cause the Scarab to start moving. Then, park the Banshee directly on top of the Scarab, directly behind that cannon-looking object. Get off the Banshee. If you look closely, you will see that the Banshee is somewhat "magnetically" stuck to the Scarab, and therefore will not fall off. The only trick is getting back on it and getting away while the Banshees try to gun you down. Put on your camo, make a run for it, then fly away.
Leo A.

The Great Journey: Get inside Scarab control room:
Note: You must have the Sputnik Skull to do this trick. Get to the part at the start of the mission when you are on the beach with the Scarab docked to a high platform. Destroy all the enemies, and do the following. You also must have a Wraith. Find the large rock that is closest to the high platform that the Scarab is docked to. Drive your Wraith to the back side of the rock, so that it is between the rock and the base of the platform. Hop out of the Wraith, get on top of it, and grenade jump. You will be blasted to the top of the large rock. Then, grenade jump on top of the rock. Just before it explodes, jump towards the platform. If done correctly, you will be blasted onto the platform. You will now be able to walk around on the platform, on the Scarab, and in the Scarab control room. Note that it is raining inside the control room. If you want to get back down on the ground, walk down one of the Scarab's legs.
Joshua Epperly.

The Great Journey: Golden Banshee:
In co-op mode, go to the area where Sgt. Johnson is riding the big machine. Hop in the Banshees and follow him. When you encounter the first Wraiths, kill them. Then, have the player two kill player one with the Banshee Bomb. Have the player two ride down to the ground so that the player one respawns. Note: Make sure player two stays in the Banshee. Have player one walk all the way to the end where Sgt. Johnson stops in order to burst the door down, while at the same time have player two follow player one. Note: You do not have to wait for Sgt. Johnson to get there; you can get ahead of him. Then, have player one look down the hill. There should be a Golden Banshee. When you jump down the hill, stay against the wall so that you do not die. Then, get the Golden Banshee. Note: It may be a little beat up already.
Andy Brown.

In co-op mode, you can get a golden Banshee like the ones used in The Arbiter mission to kill The Heretic. To get it, follow the scarab to the end of the path. Go down into the pit at the bottom where there are two Wraiths. There will also be a golden Banshee here.
Halo Finaticate.

The Great Journey: Have spec-ops leader follow you:
After the first vehicle portion in the game, just before you meet the black Elite and Hunters, go back and drive the Spectre with the spec-ops leader (the invincible white Elite) with you. Drive inside. There will be a small door that the Spectre cannot fit through. Destroy the Spectre in any way. Then, punch the spec-ops leader toward the door. If done correctly, he will continue on to the next room with you. Note: Stay with him; if you go too far from him he will disappear. After clearing rooms, punch him through doors again. He will follow you all the way up to the Banshee part. Note: He may disappear during the loading sequences.
Acavina.

The Great Journey: Have Hunter follow you:
Select the easy difficulty setting. At the last part of the level when you are on the platform waiting for a Banshee to cover the Scarab, do the following. You must have a Hunter with you on the platform. Melee the Hunter anywhere where it is wearing armor, and make sure you do not hit him in the orange area. Melee him until he falls off the platform, then jump off the platform as well. You can now melee him to any area where you fight enemies, and he will fight them. Make sure that you stay close to him. If you do not watch him carefully, he will disappear. Try having a Banshee with you to fight your enemies as well. Note: It is possible to get the Hunter all the way to the shore of the lake with the structure Tartarus is in. You can also find two Heretic Banshees on the shore. Having the Hunter there may effect if the Heretic Banshee is there or not.
Joshua Epperly.

The Great Journey: Fight Tartarus with a Banshee:
After the Scarab blows down the door to the compound, fly your Banshee into the area where you have to fight all the Brutes. Note: You will have to maneuver carefully to get through the doorways and all the melted metal. After you get into the room with the Brutes, qucikly get the Banshee through the doors before they lock. If done correctly, after the intermission sequence run back to where Johnson is located. You should be able to keep going behind him, and you will see Elites spawning. Your Banshee should be near where they spawn. Note: You can also go back into the room where you were supposed to have fought the Brutes and pick up extra weapons if needed. You can then get into the Banshee and use it to attack the enemy Brutes and Tartarus when his shields are down.
Colin Riley.

When fighting Tartarus, you can use the boost in your Banshee. If he is close enough to the edge, he will fly off of the platform screaming to his "death". However, he will not die. He will then fly out of the lift in the middle to the top layer of the platform. If you boost at the correct time, you can hit him off again as soon as he lands. Note: This trick does not hurt Tartarus. It will however cause damage if you boost into him while his "shields" are down; but the falling off the edge itself causes no, or very little, damage. The fact that you can hit him off of the ledge while he screams to his "death" effectively makes the room sound like a torture chamber of sorts.
Colin Riley.

When you have to protect the Scarab and ride in the Banshee, get to the part when you see a lake with a tower that you will have to enter. Wait for the Scarab to blast the door, then drive to the platform in front of it. A lot of rubble will block the entryway, so you supposedly cannot get through with a Banshee. Instead of getting out of your Banshee, you can drive through the rubble and get into the next room. You can do this by flying over the rubble using boost. When you do this, you will scrape the ceiling and just barely get through. Then, fly down to the door that leads into the next room. When your Banshee is directly in front of the door, get off it, Open the door, then quickly get back in the Banshee and fly into the next room. Once inside, about ten Brutes will attack you. Defeat them by using Banshee bombs. When you have killed all of them and if your Banshee is still flyable, drive into the tunnel that you see to your right. When you are in that tunnel with your Banshee, a intermission sequence will start, showing you without your Banshee walking towards Tartarus, the Brute leader. When the sequence ends, instead of fighting the Brutes in front of you, turn around and run back to the tunnel you were last in before the intermission sequence started. Your Banshee should appear, and you can get in it and fly into the room that Tartarus is in. You will now be able to fight Tartarus in a Banshee.
lotrrocks294.

The Great Journey: Elite Skull:
During the intermission sequence just before you fight Tartaurus, you can see an Elite skull on his shoulder. Note: It will not appear during game play.
Acavina.

Headlong: Sniper location:
This location requires a Banshee to reach, but you will be next to untouchable once you are there. After getting a Banshee go to the right. Just after you have passed the cranes, carefully land your Banshee on or near the walkway that has the Human sniper rifle on it. From there, get back in your Banshee and go straight up to maximum altitude. If done correctly, you should be just above the top of a building that is slightly smaller than the two other buildings adjacent to it. Land your Banshee on it, but do not destroy it. Take out your sniper rifle and start shooting. From here, the only reliable way someone can kill you is with another sniper rifle, and they cannot physically reach you because you have the Banshee.
Seth Rose.

Find a Banshee and fly to the water's edge where it meets the road next to the huge circle art piece. Look around and you will see about five trees. Choose one and slowly fly above it (basically land on it). Hop out, and you will be in a tree. Note: A few a attempts may be required. Stand or duck to blend in, then simply pick off the enemy one by one.
jrod.

Headlong: Hiding location:
Around the building under construction are lights on the walls. Although they are simple to see when looking at them, they are easily overlooked by most people. To get to the one across from the beam rifle window, jump on top of the railing, behind the boxes just before the bridge to the beam rifle. Looking down you can see the light on the wall. Jumping to it is simple. Lift your legs while crouching if needed. The other light is across from the battle rifle spawn location (which is above the Banshee spawn location). This one is much easier to get to, because it is very close to the bridge crossing to the battle rifle and two plasma grenades. Jumping to it is very simple and requires little effort. These locations are very easy to reach and makes the person looking feel foolish for not seeing you earlier.
Gamertag FireIsGood.

Headlong: Hidden message:
Select multi-player mode and choose the Headlong level. Go to the Red base. On some of the yellow walls, there is graffiti. Some it includes is a hippo head. This is a reference to former Bungie member Alex Seropian's new game company's (Wideload Games) logo.
Zed $.

High Charity: Iron Skull:
Under the legendary difficulty setting, after you cross the light bridges and fight through to the end of the level, you reach a room where Cortana says "Brood and Elite ships are engaging all around. The next lift will take you up to the conduit. Hurry". Go to the room, enter the lift, and look up while going up. Hold X so that you can grab the skull on the way up. The word "Iron" will appear when you get it.
crewchief77.

Ivory Tower: Shortcut:
To get quickly from the wooden walkway around the middle of the map to where the air lifts are, use the hanging potted plants to jump across. The hanging plants will break when shot; be careful. This is useful for cutting off a fleeing opponent in a swords game.
Gamertag FireIsGood.

Metropolis: Destroying the Scrab:
First, follow the Marines out to the bridge (or walkway). Next, switch your battle rifle with the rocket launcher. It should be a few steps north of the sniper. Then, go next to the second rocket launcher. It will be a few steps ahead. You should see ammunition next to it. Instead of following the Marines, make a turn into the walkway in which there is only one way in and out. The Scarab should shortly arrive, but it will not see you. They will probably fire at the Marines. When they get far enough, there will be a huge entrance to fire a rocket at. If you followed the Marines, it will be harder to shoot the aliens on deck. Rapidly shoot rockets at the side entrance of the Scarab. When all forces on deck are defeated, join up with the Marines and jump onto the Scarab. No one will attack you if you try to hide on deck from the Elites.

Metropolis: Trap Scarab:
In the end where you must destroy the Scarab, you can walk longer and trap it. When you get on the walkways to jump on it, after you come out of the door, turn right. Follow this until it turns left. It is loaded with a variety of weapons and ammo. Sniper and rocket launchers work great as a combo.
Emmazmine.

Metropolis: Get Scarab early:
Start the level in co-operative mode under any difficulty setting. After doing the Scarab gun trick with the Banshee, do not get rid of your Banshee. Continue through the level until reaching the part where you meet the Marines in the little base surrounded by Wraiths. Walk up the stairs so that the Scarab moves towards you. Land next to your friend and let them jump on. Do not boost or player two will fall off. Fly over the Scarab and let player two off. If they go inside the Banshee, it will rock from side to side and there will be no Covenant in it until you get the part where you are meant to board it.
maxthemadman.

First, follow the "Scarab gun" trick. When you steal the Banshee, stop. Go through the tunnel with the Banshee. At the end of the of it, you will see a Jackal. Kill the Jackal, then turn right and fly to the right. You should see two big doors that you must go through. Go through one of them. You should now see the Scarab walking in a big courtyard near a Wraith. If you do not continue until you see the Scarab, you can do one of two things with your Banshee. You can either kill the enemies on the second level with the Banshee, land it, then kill the enemies on the third level without your Banshee; or you can land your Banshee on the top floor and kill the enemies by yourself without your Banshee on the second and third floor. If you are in co-op mode and you want to see yourself on the Scarab at the end of the level where you are walking out of the smoke, even though you are not on the Scarab, follow these directions. Get over the bridge and only shoot one Banshee. If you shoot two, start the level again. Hijack two Banshees, one for you and one for a friend. Fly the Banshees through the tunnel. When you see the Scarab, let your friend land while you kill everyone on the second floor but do not kill your friend. Let your friend go to the third floor and kill everyone except one grunt. Throw two plasma grenades on him and two plasma grenades on the ground in front of you. The grunt should explode, then you should as well. Your partner in the Banshee will still be alive, but not on the Scarab. The person in the Scarab should be died. Still, in intermission sequence you should see yourself walking off the Scarab. Note: This might take several times to perfect.
The Masta.

Metropolis: Scarab gun:
Use the following trick to get a Scarab gun on Metropolis. When you start the mission, kill the two starting Marines that you have, because they will eventually destroy the Banshees required later. Then, get in the Warthog and do not bother killing anything -- just drive straight past the Ghosts and Wraith tanks. When you get to the part where the Banshes fly overhead, kill everything there, including the Marines. Note: Kill everything except Banshees and one Ghost. Then, hijack the Ghost. Go into the tunnel and get a Banshee to follow you. Do not destroy it. Also, do not try to board it, because it will either throw you back out of the tunnel or will explode. Have it follow you to the part where you need to go through a tube. Once at the beginning of the tube, make sure you have the "Hold X to jack Banshee" icon on your screen. Melee the Banshee so that it will come towards you slight. Then, just as it reads "Loading...", hold X to hijack the Banshee. You have about two seconds before the Banshee disappears. Once you have hijacked the Banshee, fly it through the tube. This will take some effort, but can be done. Once you fly it through, fly up and northwest of your position. You will see a giant bridge-like structure very far away from your position. Once you have flown up to the top of it, there should be a small orange triangle with an exclamation mark on it, with white slashes around its border. There is also a plasma rifle floating above it. Although marked as a plasma rifle, it is really a Scarab rifle. It will produce shots like the Scarabs do, and will not run out of ammo or overheat. It is extremely powerful and takes pretty much anything out in one hit. Note: Do not shoot to close to yourself, otherwise you will blow yourself up.
Ryan Oberg.

Get into the tank and move along the bridge destroying everything in your way. When you reach the point where Cortana says "Nice welcoming party," do not shoot the Banshees that start on the way from the city. Instead, get out of the tank and start walking into the tunnel (you may take a Ghost if desired). Start moving into the tunnel slowly, pop one or two shots into one or two of the Banshees to get them to attack and follow you. The Banshee should enter the tunnel and will follow you. Do not board the Banshee, as it will explode as soon as you take it over. Continue through the tunnel until you reach the first gate. Get out of the Ghost if you used one. Walk up the ramp, take out the enemies, and lure the Banshee between the gates in the tunnel. This may take some time as the Banshee will try to follow you over the ramp on the right hand side. Proceed by walking until you reach the next gate and repeat the process to get the Banshee through the gate. Keep walking until you reach the very end of the tunnel. Kill the enemies so you do not get shot during this part. Shoot off the Gravity Pods (glowing pods on the wings) and either get the Banshee to follow you into the reddish room or melee the Banshee into the room. Go through the room and look at the tunnel leading outside. Get the Banshee to go towards the tunnel and board it as it enters. Note: Make sure that when you finish boarding the Banshee the "Loading...Done" message appears on the left side. If you do not board it at that moment, the Banshee will explode. Next, fly out of the tunnel and go immediately to the left. Notice the long bridge between the two buildings on the left. This bridge is very high up. After reaching the bridge between the buildings, fly or get out then walk to about the middle of it. There will be what appears to be a plasma rifle on top of a red triangle with a "!" on it. Pick up the rifle, get back into the Banshee, and fly back down where you are supposed to be. You now have the Scarab gun. It has unequaled range, unlimited ammunition, and will never overheat. This is the most powerful weapon in the game. Note: You can only use the Scarab gun in Metropolis as you cannot take it into the next level.
Kenneth.

Use the "Outskirts: Hidden sword" trick to obtain that sword. When on the Metropolis level at the section with two Warthogs, kill your fellow Marines and position a Warthog on the furthest walkway. Next, sit in the side seat of a Warthog and wait for the Pelican. Do all of this before the Covenant are all dead. When your Pelican arrives, you should be able to sword cancel off it and fly up to an area that resembles a giant bridge at the top of the level. Search around, and the Scarab gun should be up there.
Matt Peeler.

This trick is easiest when done on co-op mode. When you start, cross the bridge. Take out every enemy, and even your Marines. When you are near the end, Cortana will say something about a "welcome party". Three Banshees and a few Ghosts will appear. Take them all out. Then, two Wraiths and two Banshees will appear. Take out both Wraiths, and only one Banshee. Have player one continue through the tunnel, but have player two stay outside and distract the Banshee. Once player one reaches the area with the circular opening (a Jackal with a Beam rifle is there), take out the Jackal and go back to where player two is located. Get the Banshee to follow both players into the tunnel. Do not board it yet. The first few times it will come at you and fly back out; but stay where you are. It should come back after you. If it does not, go back outside and try again. Eventually, you will have to get it over two road blocks. Once it is past the second one, have both players stand near the entrance of the room where player one took out the Jackal. It should fly at you and get stuck. Shoot off both its wings so that it can fit through. Have player one walk slowly in front of the Banshee, making it follow him. Player two should be behind it, gently pushing it. Take it to the left and get ready to board it. As soon as you hit the checkpoint, the Elite in the Banshee will disappear. You only have about one second to get in before the Banshee also disappears. Both players should press X quickly. If done correctly, one of the players will be driving the Banshee. Take it outside and directly up. Very high in the sky are two skyscrapers with two bridges connecting them. In the middle of the bridge closest to you, there is something that looks like a plasma rifle. It is actually a Scarab gun. It has unlimited ammunition. Note: Do not aim at the ground.
Nicholas Villano.

When you start the level, kill both your Marines. Get in the tank and destroy the Ghosts and Wraith on the bridge. Later on the bridge, more Marines will join the fight. Also kill both of them. Once you reach the end of the bridge, destroy the two Wraiths. Hijack one Ghost and destroy the others. Destroy all the Banshees, but spare one and let it fly in the air. Then, gin the Ghost and have the Banshee follow you in the tunnel. Catch its attention by shooting it periodically. If it gets stuck in any corners, go behind it and move around a few times so it can retarget you. Now that you are in the tunnel, destroy the Warthog and marines so they do not destroy the Banshee. Lead the Banshee past the first barrier but do not let it fly too far or it will disappear. Kill any Covenant that are in your way and guide the Banshee past the second barrier. Get the Banshee into the room with the red lights. If you are having trouble getting it to fit into the room, clip its wings by shooting at them. Guide the Banshee past the room of red lights and into the small tunnel. Get off the Ghost and stay close to the Banshee. When the nessage "Loading... done" appears, immediately hijack the Banshee and fly it out of the tunnel. Look for the twin bridges in the sky and fly up there. On the first bridge is an orange cone with a plasma rifle floating on top of it. Grab it and enjoy your new plasma rifle that shoots Scarab beams.
Jasper Perez.

When playing the level on single player mode, you may be able to find a secret gun. Play under any difficulty setting. When starting the level you will be able to choose between a Scorpion tank and a Warthog. Select whichever one desired. Go across the big bridge and you will reach the edge of a tunnel. Three Banshees should be flying in the air, and three Ghosts should exit the tunnel. Hijack a Ghost and shoot a Banshee once or twice to get it to follow you into the tunnel. When you reach the part where you have to go into a tube with the Banshee still following you, the "Loading… done" message should appear. As soon as this happens, hijack the Banshee. Note: If you were too late, the Banshee will go away. Fly out of the edge of the tube and look up to your left. There should be two buildings with a skywalk connecting them. Fly up there and land on the first bridge you reach. Land your Banshee and walk on the walkway. You should see a orange cone and a plasma rifle floating about three feet above it. The gun looks like an ordinary plasma rifle, but it shoots like the Scarab.
Dirty Vegas.

There is a second Scarab gun that can be found. Start the level in co-op mode. Note: Getting the Sputnik Skull is helpful. Go through the level as usual. At the end, lure the Banshee through the tunnel as if going for the first Scarab gun. Once out, kill your partner and fly to the giant soccer ball building. When the other player respawns, have them look between the waterfall entrance area and the end of the road. Then, have the person in the Banshee fly down to the waterfall room and get out. This will trigger all the enemies and things. Kill all the Wraiths and enemies, then the two Pelicans should arrive. When they arrive, use the Banshee to fly behind the Marine HQ and it should trigger a loading zone. Then, go back, land, and go into the Marine HQ. Another loading will appear, but the other person will not teleport. This will only trigger the Scarab to fire its shot. Once you see the "Loading....done" message, have the person look down. The person should see a plasma rifle appear, and a Scarab shot will come out. To get it, you must use the rocket grenade jump to launch at it and grab it. This will take several attempts because the Scarab gun is only there for about four to six seconds. If you manage to get it, you can equip it with the other Scarab gun and become an unstoppable force.
Momo Vujisc.

Metropolis: Catch Skull:
Play the level under the legendary difficulty setting. Immediately after you exit from the underground highway, you will reach a large open-air circular room with a handful of Jackal snipers and some Elites. The quickest way to get safely to the skull is to get the next checkpoint by jumping into the Warthog and letting the Marine drive you to the next area. Jump out of it, backtrack to the large room, and clear the area. You will see a large semi-circular beam going from one of the main platforms that goes from the ground up to the top of the two towers. Do a grenade jump at the bottom of this beam and walk all the way to the top. Jump over to the ledge of the left tower. Walk to the end of the ledge and you will find the Catch skull. This skull allows enemies to drop two plasma grenades, and all enemies will toss more grenades in general.
Angilas89.

Metropolis: Soccer ball:
In the Metropolis level, there is a giant soccer ball. In order to get it, first get the Sputnik mode skull. Then, get to the part where you have to help the Marines trapped in the building. Immediately after you drive out of the square room with the waterfalls, look straight out and up. There is a building with a big glass wall that is broken at the top. Grenade jump into the building then jump on busted beams. Get on top of the building. From there, go to the right and there should be another busted-up building with a giant soccer ball for your enjoyment.
Jamul123.

Proceed as if you were going to get the Scarab gun. Note: You will need the Banshee. Get to the area with two roads (after the field with some Ghosts and a Wraith. Drive up the wall in front of you, You will see a hole in the wall. Go in it, then a bit to the left of you is the giant ball.
Ole Petter Larsen.

Note: This was done under the legendary difficulty setting. You may also need the Sputnik Skull located in Quarantine Zone. Get to the part the Metropolis level during the regroup with Marines in City Centre, as you exit the hallway/path with the waterfalls. Climb aboard the Warthog as a passenger. This is a machine gun Warthog, not the Gauss; it is the one trying to take out the two Ghosts. You will need a rocket launcher. Wait until you get near one of those flashy signs that says Area B closes and flashes X. This is where you turn the corner to the two Wraiths and two Jackal snipers. Aim your rocket near the front of the Warthog between the winch and right headlight, and the Warthog will spin up. Make sure that the Warthog is spinning slowly and going more upwards than sideways. You may need to try several times. If done correctly, you should be on top of a building. If there is a hole in it, then look to the left of the hole. Go back to the wall behind the hole. Face the left and move forward until you reach another building with its top cut off by your building's corners. Jump to this top, then continue to the back of it. You should see a giant metallic soccer ball that has a horizon line on it. Use the rocket launcher, melee attack, or a grenade to get it off the building. This is best done in co-op mode, as you can hijack two Ghosts and play soccer with this ball.
Simmons212214.

Metropolis: Fly Banshee:
When you cross the bridge and are attacked by Ghosts and Wraiths, get out of the tank and jump on the turret. Wait for the Banshees to fly low, then jump towards them and hold X. You will not be able to fly them to the through the tunnel or past the gate, but it makes destroying the Wraiths a lot easier. You can also reach the top of the bridge by doing this.
Josh Moore.

Metropolis: Ride a Ghost the entire level:
Kill your Marines at the beginning, and walk the bridge. When the first set of Ghosts comes toward you, press X to steal one of them. Kill the previous pilot and other Ghost. You can now ride the Ghost through the entire level, including on the Scarab.
Alex Schoolcraft.

Metropolis: Fun with Ghost:
Take the Ghost before going in to the headquarters. Drive all the way up where you see the tank get blown up by the Scarab. Continue driving until you reach the bridges where you are supposed to jump on the Scarab. It will bee a lot easier to kill all the Covenant with the ghost. Also, you can jump on the Scarab and drive the Ghost inside of it.
ZUSHII.

Metropolis: Fun with tank:
Go through the level until you reach the point where you go into the place where you meet the Scarab for the first time. Take a Ghost and drive it all the way to where "When I called for reinforcement, I didn't think they would send a Spartan" is said. Take the Ghost and fly down to the tank that usually gets blown up. Quickly jump in the tank and back off. When the Scarab notices that you have reversed the tank, they will not shoot it, but just keep walking. After done this, you can have fun in your tank.
ZUSHII.

Metropolis: Get in Pelican:
At the end of the level are two Pelicans that you can get into. One is carrying a tank (this one is slightly difficult), and the other is the one that drops your troops. If you want to get in the pelican with the tank, you must lure a Banshee in through the tunnel all the way down to the part with the tube. Then, steal it while "Loading..." is displayed. Note: If you use this method, you can get the secret Scarab rifle, giant soccer ball, and get in the Peilcan. You need to be on co-op mode to get in the Pelican with the tank. Once you have the Banshee through, get the Scarab rifle. Then, fly down. Once the two Pelicans arrive, have one player jump on the Banshee and have the other fly it up to the Pelican with the tank. Use the Banshee bomb or Scarab rifle to blow the tank down. Make sure one of the players in on the Banshee. Then, have the person in the Banshee fly close to the Pelican's seats. Have the other player jump into the seats and press X. You will now be inside the Pelican. Alternately, put a Warthog up on the ramp, then jump on the Pelican that drops the soldiers off.
momo Vujisc.

Metropolis: Get four to seven people in a Warthog:
This must be done in multi-player mode. If you play with one partner you will only have four people in the Warthog. If three people, five people in warthog, and etc. At the beginning of the level there is a tank and a Warthog. Take the Warthog. Have player one drive. Let the two marines get in the passenger and gunner spots. Next, let your friend(s) jump on anywhere except in front of the gunner, because he will kill you. Drive and no one will fall off. Have player one drive at full speed and hit something hard. Your friends should fly off and die.
The Masta.

Metropolis: Funny Grunt:
Defeat all the Elites on top of the Scarab. Then, kill the Grunts on that level of the Scarab. Do not go inside yet. Throw either type of grenade. The Grunts might yell "They're here ahhhhhhhh", "They're here hahahaha" (in an evil tone because of Elites), and other comments.
bondra2cool.

Metropolis: Easy kills:
When you jump on the giant spider thing, wait until it stops. Then, go down the stairs so that you can see the aliens. Go back up go onto the head, then turn so that you are facing the stairs and lean to the left . Keep pressing Forward. You should be able to see the aliens and be able to kill them. They will not know where you are. Note: This may require a few attempts.
Gundo.

Metropolis: Angry Elite:
Play through the level under any difficulty setting. After you get through to the area with the Wraiths, you must meet with the Marines in the building. There will be a Marine with a rocket launcher at the first short set of stairs. Take his gun. Up the stairs to the right, switch to your secondary weapon and take the shotgun from the Marine. Climb up the stairs. There will be a Marine who says, "When I asked for reinforcements, I didn't think they'd send a Spartan." Turn left and hurry up the stairs. Go to the door and wait for the Scarab to pass overhead. The door will open. Run through and follow the Marine leading you. When you get to the top there will be a bridge across to the other side. The Scarab will come under this. There will be Rocket Launcher ammo. Take this and wait at the bridge for the Scarab. Jump on the Scarab and use your shotgun to take out the Elites, Grunts, and Jackals. Kill all the enemies until they no longer appear from the hatch. Enter the hatch and take the left hall first. Shoot the grunt. Then, go back to the other hall. You will see an Ultra (Elite with silver grey armor) with a plasma rifle. He will vigorously shake his head, roar, and take his Energy Sword out at the same time and charge you. A few shots may be required to kill him. After he is dead Cortana will say, "Be careful Chief, that Elite was an Ultra and those pilots are no pushovers either." The red armored pilots will then turn around. Use your rocket launcher to kill them from the other side of the Scarab.
Dakota Emata.

New Mombasa: Get on top of level:
When fighting the Scarab, the giant supertank, after it destroys the Scorpion it will start moving towards you. Look to your right. There should be a thin ramp-like spot. Run up this area before the Scarab reaches you and stand in the big flat area, watching it get closer. When it reaches you and starts going over another wall, jump and you will follow it. Normally the wall is too high, but when under the Scarab you can jump about twice as high.
Christian Aylor.

Oracle: Famine Skull:
After you go down the swirling elevator and enter the room with the big glass windows, destroy all the enemies. Then, grenade jump to the opposite side of the second floor. There will be four Flood soldiers shaking on the ground with a skull between them. Get the skull and the word "Famine" will appear.
crewchief77.

Oracle: Infection forms in a tank:
At the beginning of the Level, you will see a large tank (not the vehicle kind) in front of you. Look closely inside of it to see some small infection forms floating around.
commanderberk8.

Oracle: Defeating the Heretic leader:
Before you get to the level, make sure you have two Needlers with at least 120 rounds of ammunition on each gun. When the level starts, to kill the both clones of him, shoot them repeatedly. Make sure one dies before you move to another. When he finally arrives, repeatedly shoot him until he dies. When you win you should not have taken much damage.
Zackary Chevez.

Outskirts: Blind Skull:
When you begin the mission, your vision will get blurry. When it returns to normal, you will see a blinking door. Enter it, then stop. Look up to see a fluorescent light over the door you just used, and another one on the opposite wall. Jump and duck at the same time to get on one of thos lights. Do the same thing again to get onto the ledge next to the lights. Look to the left on the ledge and you should find a dark passage. Follow it to find some grenades, a skull, and a camera at the end. Take the skull and your HUD will disappear and the word "Blind" will be displayed. You will not be able to see your weapon, body, shields, ammo, or HUD. You can use the skull as a melee weapon, which does good damage to opponents. However, using a grenade, firing a weapon, trying to drive, or using a turret will drop the skull. However, you can be a passenger in a Warthog and still keep it. To return to normal vision, save and quit the game, select the Cairo Station mission in campaign mode, save and quit the game, then return to the Outskirts level.

The level just has the Master Chief awakening and is stopped with the haziness. Walk forward as if you are going to proceed through the level as usual In the first hall, there will be a grunt. Kill the grunt but do not go outside. Stay in that hallway. Look up in that hallway to see light type panels. If timed correctly, you can jump up onto the panel. Beside you will be a wall that you cannot jump to. Look back and face the original wall you were looking at when you jumped up. Throw a grenade against the wall, looking down slightly so it will stop bouncing at your feet. When you count to about three, jump in the air and begin to go to the wall with the slanted top. The grenade will explode and boost you up further, putting you on top of the wall. You can then do two things. You can look across and continue with the level or you can look the other way to find a skinny passageway with the Blind mode skull , grenade, and camera type thing. If you continue to use grenade jumping, you can skip major parts of the level.
Vince R. Labriola and spar13.

Once you can move, go into the door in front and look up. You will see a light sticking out of the wall. Crouch jump to get on top of it. Next, jump on the roof to your left. Once on top, take another left down the narrow hallway. Look on the ground at the end of the hallway. You will see a skull, a camera, and five grenades stacked in a pyramid shape. Hold X to pick up the skull. The word "Blind" will appear, and your HUD, arms, and gun will disappear. However, you can still use them. If desired, you can go around and hit people with the skull.
Drew McLeod.

Outskirts: Your Daddy's Skull:
Note: This may require several attempts. Play the level under the legendary difficulty setting. The main thing appears to be getting the checkpoint just past the Pelican that picks up Johnson. This checkpoint spawns the sniper Jackals in "sniper alley". The skull itself is in a room on a balcony. The room contains a sniper rifle and sniper ammo; it will also contain the skull. Picking up the skull teleports you to the ground level and gives you just a Plasma Pistol. You will quickly be assaulted by Elites. Killing the last Elite will have the text for the skull flash. You have to kill all of the Elites to actually finish getting the skull. If you die to the Elites, and your checkpoint no longer spawns the skull, kill yourself four or five times to get pushed back one extra checkpoint. The skull should spawn for you again, and you can try the fight again. When you get the skull and kill all the Elites, the phrase "I Would Have Been Your Daddy" will appear.
Angilas89.

Outskirts: Battle Royale:
Start the Outskirts mission under legendary difficulty setting. Play until you get to part where Sarge is airlifted out by the Pelican. Defeat all the enemies in the next area, where there is six snipers, the army of buggers, and the invisible Elites. After they are defeated, turn to face the next alleyway. There will be a couple of Jackals and two snipers down the way, and one that will not reveal himself until you fire a shot on the walkway above with the two archways. Defeat them, then jump on the awning at the beginning of the alley. Next, jump up on the beam in front of you. Walk across the beam to the rooftop across the way. If you get stuck, crouch and walk. Continue forward. There will be one more sniper to the left between the buildings to the right of the "L" shaped roof. Jump across to the roof where the hidden sniper was located (the one that was above the two archways). Make your way across to the larger rooftop. Immediately turn left towards the alley. If you walk too far across the roof, a sniper will come out. When there, look across the way. You will see some sniper ammo. Jump across to that side, and it will say "Checkpoint". There will be a room to your right. Inside is a sniper, more ammo, and a skull. Once you pick up the skull, the screen turns white and you will end up in the alley below with a plasma pistol and an elite with a sword chasing you. Note: Once you finish or die, the skull does not come back for any profile you use. After you are done, it puts you back before you picked up the skulls.
Carlos Rodriguez.

Outskirts: Extra Warthog:
In campaign mode, when you get to the tunnel, get a Marine to drive your Warthog and hop out. There are a couple of Ghosts nearby. Get in one and drive off. If you look back, there will be not one, but two Warthogs, both with Marines on the gunner's seat tailing each other.
Win Mason.

Outskirts: Use a Banshee in campaign:
First, kill all of the Marines, even the one at the cables that you save. If you do not kill them, they will shoot down the Banshees. After you kill them, hop out of your tank, jump on its turret, and crouch. Wait for the Banshee to swoop in and shoot when it gets close to being overhead. Jump and hold X so you can board the Banshee. You may have do this multiple times until you can board it. Once in the Banshee, fly around and have fun. Do not worry about flying because there is an invisible wall above. You cannot die unless you jump out of your Banshee or go off the bridge.
dennis.

Outskirts: Hidden sword:
Under the easy difficulty setting, go to the part where the Grunt is walking up the stairs. Look at him. Then, do a 180 degree turn. You should see two lights on the left and right. Jump on the right one. Turn where the Grunt was then look up. You will see a slanted ledge. Do a crouch-jump and go up. Then, turn around. You must jump to the next ledge and turn left. You need to use a boost to get up. Continue along the level on top of buildings. Then, look down. You will see part of a broken building. Jump down and you will see a sword sticking straight into the ground through a Marine corpse. Swap your weapon for it. It has unlimited ammunition.
souleus61.

When you start the level, walk into the hallway and jump onto the light. Then, duck jump on the top of the building. When on top, turn around and jump across the gap to the narrow alleyway. Then, duck jump onto the wall to your right. Turn left and jump across the gap to the next building over. To the right there should be an alleyway. Go down it and you will run into a short wall. Jump on top of it then move onto the building to the left. Once on top of that roof, move forward until you reach the highway that has been destroyed. Jump onto the highway. Then, duck jump onto the building across the way. Once on top of that roof, walk straight ahead until you fall into an alley with a red floor. Go straight through that alley until you reach two large vents. Jump on top of them and make your way up to the next tier of red roofing. Look to your left and you will see a large hole in the corner of the building. Drop into the building and you will find a blood stain on the floor with an energy sword next to it.
GeneralEnder.

When the level starts, go to where the Grunt is walking up to investigate the crash. Face the Grunt and turn to your right. You will be facing a small light that is low enough to jump on. Jump on it, and look up. there will be a ledge with a small lip on it. Jump-crouch on top of it and turn around. On the left side of where you came up there is a small hall. Jump on it and to your right there is a ledge above that is too tall to jump on top of. Throw a grenade at your feet, wait a moment, and jump in time to catch a small enough lift to boost you up to this area. You will now be facing the crashed Dropship. Turn to your left and continue until you reach the highway, or, where the sergeant gets picked up. You should be on the right side of the road. Continue, and you will have to jump-crouch from the highway to the next building. Once up, continue until you reach the orange roof and the fans. Jump on top of the fans then jump to the next roof. A little longer there will be a cracked building. Inside there will be a energy sword.
OBusyBusyMama.

Once you defeat the two Hunters at the start, go through the gate. A few steps forward and slightly to the left will be a small fire and a broken wall that you will pass through. Do not pass through it. Instead, on the wall-part on the side of the small fire (the left side), jump and crouch-jump until you get on top of the building. There will be some pipes that come out of a wall and then go down into the roof of the building. Jump up onto this, then jump across the small gap between the two buildings. Land on the awning and proceed forward. You are now top of the level. Make you way around the right side of the level, on top of the buildings. You will eventually reach a spot were you can jump into a bombed-out building. Look down into the empty room an you will see some blood and a sword sticking up from the floor vertically.
Ben the Sexy Sweed.

Outskirts: Marine bunker:
Get all the way to the part when the pods fall from the sky. At the far left of the beach in this area is a stone building. The building should have at least one Marine and have a rocket launcher, some ammo, and sometimes a sniper rifle. There are stairs outside the building to get on the second floor where the rocket and sniper rifle are located.
Acavina.

Outskirts: Secret room:
Kill all the Flood and Sentinels that are on the elevator before it moves. Jump on the elevator and jump straight back. Wait until it goes down and stops twice, then jump on the elevator and go to the opposite side of it and to the right slightly. Jump off, and you will be in a small dark room. You will be able to skip the elevator part. This may require a few attempts. You must jump far to get back to the elevator to go through the door when it opens.
Ddeadend9.

Outskirts: Hidden sniper rifle:
After you kill the Hunters and go around the corner, jump on the boxes and then the ledge. Keep going to find a dead Marine with a sniper rifle.
AsianAssassin11.

After you kill the Hunters when you come around the corner, you will see Jackals in the distance. Sarge gets picked up by the Pelican there will be an area directly to the right where there will be some concrete slabs angled on top of each other. Jump over these slabs and there will be lots of human sniper rifles and battle rifle ammunition. Beyond this on the level above there is more sniper rifle ammunition (also a sniper rifle) and pistol ammunition, along with a few other weapons and grenades.
Heckenschütze.

Outskirts: Invincible Sarge:
When you are playing the Outskirts level, Sarge will come along, but he is invincible. You can use him to your advantage. If you are playing under the legendary difficulty setting and your shield is down, stand behind him when he is shooting Covenant. This should give you some time to restore your shield. Also, he has infinite ammunition. If you find a very good gun but are very low on ammunition, give it to Sarge.
Piti.

Outskirts: Shortcuts:
At the very start of the mission, go into the hallway with the Grunt. Once you enter the hallway, look across from the door and there will be a light. Jump on the light then crouch jump (jump and hold Crouch) to the roof. Look to the left past the Blind Skull passage and you will see a ledge. Walk to the ledge, look to the left, and there should be a hole and a hallway-like ledge that you can jump to. Jump to it. Walk to the end until you hit an invisible barrier, then look to the right wall. Do a grenade jump to a rooftop beside the wall. If you cannot make it, try getting the Sputnik mode skull first. Go to the right, and you may hit an invisible barrier. However, you can jump over it. Look to the right and jump onto the rooftop. Look straight ahead, and there should be a hole and a building. Jump over or go around the hole. Hug the building, but walk along the rooftop toward the courtyard. When you get as far as you can go toward the courtyard, go to the left. Go as far as you can and get on the black ledge to the right. Go to the far end of the ledge, then look to the left and get on the rooftop. There will be another hole that you can jump over or go around. Go to the right and go to the far end and take a left. You will find a half-destroyed bridge-like building. Get on it and stop. Note: Watch out for the hole in the middle. Look to the right, and there will be two pillars holding up the bridge. Get on the closest one to you. Run across it and jump to the closest rooftop. Run to the far end of the rooftop and jump as far as you can. You may fall in an area, but can climb out on boxes. You should now be at the area where the Pelican arrives to pick up Sarge. It may not arrive, but if it does not it is not a problem. Then, continue the level as usual.
Blake.

It is possible to skip the first battle entirely (in the courtyard, at the beginning) and sniper alley. First, go to the Quarantine Zone level under the legendary difficulty setting and collect the Sputnik skull, which intensifies explosions and melee attacks. Save and quit then go to Outskirts under any difficulty setting. Go across the street and into the alcove where the Covenant come from. Look up and you can see a ledge. Grenade jump up there then continue jumping over the rooftops. You should be able to go over the gate that the Hunters come out of and bypass sniper alley.

Outskirts: Hidden area:
When you get past the dark hallway, go all the way down to where the Marines bring you the Warthog. Get on the dumpster all the way at the dead end. You will see a tiny ledge in front of you. Jump on it, and there will be more tiny leagues. Get on the last league, then throw a grenade to grenade jump onto the big league. When you are up there, you will see something that looks like a satellite. Jump on it then jump on the pole that looks like a "T". Be careful -- the "T" is very thin. Get to the tip of it and jump to the part of the big league that is slanted. When you are on there, go to the end towards the water. Just keep walking until you hit the barrier. Walk over to the other big league. There will be a Covenant Dropship. It will not shoot you. Note: You can also walk into certain buildings.
Weston ONeill.

Outskirts: Get out on any roof:
When you wake up, kill all the Covenant. Then, go to the place where the truck is located (not the one that is flipped over). You will see an alley. Go to it. you will see a ledge and a corner with a rock pile. Get on it then crouch jump up on the ledge. Then, jump to the building and continue. You can climb the roofs until the hotel, unless your playing in co-op mode.
cerebrus.

Once you get out of the corridor, go towards the garbage can and throw a grenade at it .Once it is out of the corner, start moving the garbage can by pushing it (not by melee attacking it). Move it up the alley, and there will be a pile of filth. Move the garbage can against the wall and push it on top of the pile of filth. Then, jump on top of the garbage can then jump on the ledge. Keep to the wall then go to the edge. Jump on the other roof, then jump on the slant. You can keep going anywhere on the roofs.
morgan smith.

After the Covenant finish pummeling you and the Hunters break down the door, go to the turret and use it to kill them. This has no relation to the cheat, but just makes it faster. Then, go through those doors and keep moving until you get to the "sniper's alley", where all the Jackals are perched. Run to the dumpster, jump onto it then to the orange sloping roof. Jump to the second level, However, because you can only stay on the edge, move over to where the rain pipes are coming from the wall. Jump onto them then onto the roof edge. You can now jump freely from roof to roof. This is useful under the legendary difficulty setting. Find the building with a blown out loft. There is a Jackal sniper in there. Kill him. There is a large, flat roof. Aim there. A Jackal will run out from between the two buildings and onto the roof. Also hit him, because their rifles hurt. There now should be a building with a some drying clothes. There is a sniper rifle inside. There is a building below where a hole has been blown in the wall. Jump down and go in. You will see two Grunts and perhaps an Elite. Melee them and dispatch whatever is remaining. There is a full overview on the front of the hotel. Sniper the heavy gunner and whatever else then jump down to the checkpoint.
Isaac Maclean.

Outskirts: Higher perspective:
This trick is easier to do in co-op mode. When you first start out, kill the first Grunt then continue into to the next area. Take care of all the enemies there. You will now be in an area with Jackals with shields and sniper rifles. After you kill them, a Pelican will land and pick up Sergeant Johnson. Go pack to the alley that you just came from. You should see two boxes next to a lamppost. Jump up onto the boxes. You now should have access to a higher area. To your right will be an alley with dead Covenant and a dead Marine. There is a sniper rifle here. Go back to the lamppost and have either player stand under the lamppost. Then, jump on them. Next, jump on the lamppost. Then, jump on the building's ledge. Walk on the ledge until you arrive at another building. Jump on it. You can get on to the destroyed bridge. Then, jump onto the warehouse roof. From there you can go almost anywhere on the rooftops. Make sure one player is always on the rooftops. If you fall off, kill yourself and respawn next to them.
stojak.

Outskirts: Skip sniper area:
After Sarge leaves, continue ahead. Instead of fighting in this area, you can skip it. Quickly jump onto the green dumpster on the right side. Then, jump onto the roof/ledge directly in front and next to it. Walk up the roof and jump on the pipes on the adjacent wall. From there, you can jump on to the even larger roof section. After jumping on the big roof, you can skip that area. This is useful when playing under the legendary difficulty setting.
Jamul123.

Outskirts: Posters:
Look at the posters found in the area to see Master Chief firing the chaingun at Grunts and other targets.
Justin B..

After you kill the Hunters at the beginning of this level, go through the door that they came from. On the wall at the back of the alley, there are some posters. If you are facing the two boxes that are stacked on top of each other, look left and keep following the wall until you see the posters. If you look carefully, you will se a poster with Sergeant Banks and Master Chief at the machine gun from the E3 demo from 2003. Note: Look very carefully at the posters, as they can be slightly grainy.
Barry Fletcher.

Quarantine Zone: Sputnik Skull:
Play Quarantine Zone under the legendary difficulty setting. At the start, turn left immediately. You should see an Elite, and just slightly to the left of him should be a cave. When you reach the exit to the cave, there should be a cliff. Follow the cliff to a wall. Along the wall should be a small walkway. Go on the walkway. At the end of the walkway should be a skull. The world "Sputnik" will appear when it is picked up. Explosion and melee forces are greater in this mode.
Christopher Capriles.

Quarantine Zone: Faster level completion:
At the start of the level, there will be two Ghosts and a Spectre. Take the Ghost and defeat the Sentinels. Then, go through the level, taking out the big machines that can grab your Ghost. You can keep going until you reach the canyon where the Flood in Wraiths and on ground are fighting the big machines. If you grab a rocket launcher in the earlier part of the level by the Warthog in the center of the first major fire fight, this should be easy. Take out the Flood with the rocket launchers and continue on once they are dead. Speed on until you reach the ship ruins. You can actually take a Ghost in the narrow path and keep speeding. although it will get tight in the room with Sentinels and Flood. Head outside and speed to the right. Take heed of the Covenant Flood with the rocket launcher. Once you enter the last room you must get off the Ghost. The Flood will notice you -- activate your camouflage. From there on, pass on through the boxes and make a left to the Ghost. Keep your rocket and sword ready and get on the Ghost. When you go to the final canyon, head to the farther end. Drive the Spectre, and speed on. Head for the middle passage once you get to the gateway to the Library's gondola, and make sure you are going fast enough. The Flood may come out with assault weapons and even rockets.
HeroicRobb.

Quarantine Zone: Sniping location:
At the point you go on foot, there will be cliff side with a ruin on it. The should be a channel on the cliff face with no ruin blocking it. Use a Ghost to get up the cliff using the boost. When at the top, there will be a vast frozen plain. This is a good sniping position. You will need the Ghost as it is a big plain. Note: Do not fall in some places, as you might get trapped or just fall to your death.
brett sapparo.

Regret: Assassins Skull:
Play the mission under the legendary difficulty setting. Enter the structure after getting off the gondola. Jump on the large stone block to reach a ledge leading out to the Covenant turrets. Turn around and face towards the structure. Then, jump up to another level around the right side of the structure. Continue to find a skull on a ledge as you make it around. Take the skull and the word "Assassins" will be displayed. All enemies in the game are permanently cloaked.
OBusyBusyMama.

Regret: Board Regret's vessel:
When you can kill the Prophet of Regret, run to him. You will be able to board his floating "chair".
Chris Unwin.

Regret: Skip part of level:
As you start in the building, continue as usual until you come out. Look around and snipe all the Jackals and kill the Covenant, but do not go into the next building. Look to your right when you reach the first bridge that you must cross. You will see that the bridge going to the area with the hover gondolas is not that far away. Grab something that resembles a stool, knock it down, and roll it up to the edge that you want to jump from. Then, get on it, run, and jump over. If you are lucky, you will make it over with the first jump. The game will automatically start the sequence which was skipped by not going into that building.
Acehacker04.

Regret: Hidden fuel rod:
When you ride the gondola to the first glass submarine/elevator vehicle, kill all the Jackals and Drones. When the elevator comes up, kill the Jackals that come out, then walk up the ramps and catwalks until you are at the top of the room. You will find a Grunt sleeping next to a wall. Melee it in the back, and it will drop a fuel rod cannon and one other weapon. However, there will not be an especially large amount of ammunition in the fuel rod cannon. Save it for the Hunters later in the level. You can also walk around the wall and look out over the gondola area.
Derek.

When you ride the gondola to the small temple, if you have marines with you let then take care of the drones. Go up the ramps until you find a doorway. It is possible the Grunt could have heard the shooting and walk out of the door. Shoot it and go in the doorway to find a fuel rod cannon. it does not have very much ammunition -- use it wisely.
Drkmasterchief.

Play through the level until the very last room where you can kill the Prophet. Do not kill him yet. Go back out of his room and go down the stairs. All the way on the left in a corner is a fuel rod.
etlink4.

Regret: Hidden plasma grenades:
After going through the Grunts in the water, you will end up in a room with a series of ramps. Continuing on, there is a large open space where two Hunters appear. There are six plasma grenades on top of the pillar behind the hologram. To retrieve the grenades you must climb up, starting at one of the corners of the big room. There are huge half arches going across the room. Get on those first and move along, jumping between them until you get to the pillar. The grenades there and two more on the ground behind the pillar (opposite the hologram) are enough to defeat one of the Hunters that appear at that place, if you do not want to snipe. Other locations of plasma grenades (accompanied by an unreloaded carbine) are under the ramps leading to and from the areas with water on the floor. Other ramps have grenades and weapons hidden below them as well.
Gamertag FireIsGood.

Regret: Keep your sword:
To keep your sword in Regret you must have the Sword in Delta Halo. When you are about to fight the guardians, duel wield your pistols and reload them both. Use your sword on a few of the guardians and make sure you only have one pistol at the moment. After the intermission sequence, make sure you still have your sword. Note: If your sword's battery runs out, youu can exchange it for another on the bridge. An Elite will have it.
lonelykid64.

Sacred Icon: Mythic Skull:
Play the level under the legendary difficulty setting. There is a semi-outdoor area which has the same type of area directly next to it. There is a large Sentinel in front of each one. Go past this area and down the piston. You will be in a vary dark and dank Flood infested area. There is a stack of six or seven boxes as you enter the room. Use them to jump up to the landing above. There are a handful of alcoves on the right-hand side. The skull is in the third alcove, floating above a dead human Flood. Enemies will have more health after this skull is collected.
Angilas89.

Sacred Icon: Carbines with extra rounds:
As you go through the campaign level Sacred Icon, you will reach a room with a green beam of light going through the room (over a big pit). Fighting your way to the second room with that beam of light, there is a carbine at the far end beside the body of a Brute with thirteen bullets in the gum and 104 extra rounds. When reloaded, there are 99 extra rounds (the normal maximum capacity is 72 rounds with 18 in the clip).
Gamertag FireIsGood.

After the room with the first carbine in it, after dropping down a level there is another dead Brute in the middle of the room with a carbine beside him. This carbine also has 13 rounds in the clip and 104 extra rounds.
Gamertag FireIsGood.

In the room with the first enforcer (big Sentinel with a shield in front), go around to the left side and climb up a ramp to a platform with another dead Brute. This dead Brute also has a carbine with 13 rounds in the gun and 104 extra rounds.
Gamertag FireIsGood.

Sacred Icon: Needlers with 495 needles:
In the first fight with an Enforcer (similar to a big flying Sentinel with a shield), go in the tunnel under where you entered the room. Under there are three Needlers, along with a few dead Brutes. Each of those Needlers has a total of 165 needles. Dual wielding these any two results in 330 total needles in your guns. Make one Needler a primary weapon then switch to your secondary weapon; then make a Plasma Rifle your secondary weapon, and dual wield a second Needler. To finish it off, walk over the last Needler and switch your Plasma Rifle for it. This results in a 405 extra needles, with 495 total needles.
Gamertag FireIsGood.

Sacred Icon: Room of death:
As soon as you start the level, go down the piston (the long slide) then immediately go down the next one. When you are in the room with lots of Sentinel-spawning machines, find the first one and destroy it. Next, look to the right of the one that just exploded to find an open doorway. Grenade jump up there (this may require the Sputnik Skull) and walk down the short hallway. When you get to the end, you will automatically die.
WOOKIES on TRICYCLES.

Turf: Sniping locations:
From the Warthog, go to the MediCamp. Look right, and hop up onto that platform. In front of you should be a building with four support beams just above head level to you. Jump on to the second one from the left, then look to your left (pressing up against the wall helps). Jump onto the awning, then at the very last moment, jump to the platform in front of you. From here, you can about-face and hop onto the rooftops for some very good sniping locations.
Ice Hedgehog.

Take the exact same steps given from the sniping location, except do not turn around and jump atop the rooftops. Face left and jump across the platform and onto the next. Look to your left slightly and you should see two pipe-like structures; aim for the pipe closest to you and make a last second crouch jump. You should be able to land on it, allowing you to ascend to the rooftops adjacent of the normal