Halo cheats: Multi-player mode

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

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Quick kill:
When you are facing a partner in multi-player and you cannot find ammunition, sneak up behind him and hit him in the back for an instant kill.
Harezik15.

In split screen multi-player mode, equip you pistol. When you see your opposition, place the aiming circle on their chest. After each shot, aim higher until you are aiming at their head. If done correctly, it only requires three shots to kill and will leave your friends wondering what hit them.
Magnum834.

This is a very interesting way to kill a player in a car. This trick requires is a plasma grenade and a human pistol. If your opponent tries to run you over, dodge him by moving to the left of the car. Try to get into the side seat of the car. Once this is done, throw a plasma grenade down. Jump out of the car and run. The pistol is used for backup. This may take a few times, and a few deaths.
Matthew Paulino.

The fastest kill other than a rocket launcher, sniper, or grenades, is to use a charged plasma pistol shot to take out shields. Then, take out your shotgun and rip through their health in one shot, if you are close enough. If done fast enough, your opponent will not know what hit them.
Troy Lemieur.

In any multi-player level with shotguns, get one. Instead of wasting eight shots on your opponent, try the following. Jump around to avoid their frantic shooting and get as close in as you can. Take careful aim and fire. If you were close enough, they will die in one shot. You will probably lose about half of your health every time you do this, until you get skilled.
Liquidman.

Telefragging:
When you go through a portal and quickly back up, you do not get transported again, but instead are standing inside the portal. Then, have another person go to the opposite end of the teleporter. Have him stand there. After about three seconds the person that was inside the teleporter will be "telefragged". This trick works best in the Rat Race level.
DDarkKnight90M.

Suicide strategy:
When on a difficult stage, send one of the players out to kill everybody and have the other player remain in a hiding spot with the plasma gun, shooting people. If the other player dies, go into hiding and wait for them to reappear.
Sluke52.

Have your partner throw a Plasma Grenade on your back then run into a crowd of enemies. They will stay to shoot you instead of running away, even with the grenade strapped on your back.
Probaseballchump.

Instant full life:
This trick works better in cooperative mode. If you need life and you have a partner, wait until you have killed 90% of the enemies around you. Then, have your partner hit you in the back with a gun. You will respawn with full life and assault rifle ammo. In single player mode, you can frag yourself but your weapons might fly across the screen and you will need to find them.
cstawiarski.

Invincibility:
When in a level that has vehicles and/or rocket launchers, when you are about to get hit or run over, pause game play, You will be invulnerable since you are "taking a break". This is a real-time pause, so everyone else can still move around and shoot.
gameguru007.

Extra ammunition:
In cooperative mode, have your friend kill you by hitting you in back with a melee attack. Then, have him pick up your ammunition, respawn again, and repeat. Have him keep killing you until he is full, then have your player pick up your ammo after he kills you. You will then have maximum ammunition. Note: this only works for the machine gun.
HaloWarthog.

In some levels at corridors, you will see an orange flash when one of team passes through a checkpoint. When this happens, get one player to stand still and hold X to reload. while other player runs back down the corridor to make the orange flash appear again. When this happens, the player who has been standing still should now empty his magazine by firing off until the gun reloads itself. When the player that held X has obtained unlimited ammunition for that level, do the same with other player. Note: Once you have unlimited ammunition, let the weapon reload automatically. If you reload manually, change weapons, press X to enter any vehicle or gun turrets, or die, you will lose this effect.
Bmwjohn2001.

Sneak up on radar:
You can sneak up on the radar by crouching down when running.
TripleR164.

Perfect view:
Play with four players and get one player a pair stand on top of another one. Then, get a player to stand next to the stack of people. Get the last player to stand on that one, then jump on top of the two stacked players. You will have three players stacked on top of each other, with a perfect view.
Kiran Jay Babla.

Get on top of buildings:
Go to Blood Gulch in multi-player mode (set vehicles on all). Put a Tank close to one of the buildings, then put a Warthog and a Ghost next to the Warthog. Go to the other base, pick up the Warthog, and jump the Ghost, Warthog, and Tank.
trustcompany20022000.

Banshees for all:
In co-op mode, take a Banshee up to the first point where the Covenant on the platform try to kill you. Have player two fly around while player one kills the Covenant and goes into the checkpoint. Both players will be in there now, even though one was in the Banshee. When you go back out to the title "Breaking stuff to look tough", there will be three Banshees. However, the Banshee that player two was in will be at have half health. If done correctly, you should have two full health Banshees and one half health Banshee. You can also have both players park on the platform, and when you come out you will have four full health Banshees.
Darkness Rules.

Fly in Ghost:
Go to the multi-player screen with the Slayer, King Of The Hill, and other options. Select "Create" Allow all vehicles in multi-player. Go to either Blood Gulch or Sidewinder. You can find Tanks, Ghosts and Warthogs. Set up a Tank in a strategic place for some fun, then get out, get in a Ghost, and go as fast as you can at the tank, towards the front. When you hit it, you will fly into the air and land hard.
YoshimitsuNik11.

Stuffed in hole:
In the second level in multi-player mode, when you get to the light bridge have one person activate the bridge as another one is about to drive off. The second person (in the vehicle) will be warped to the light bridge switch, but the Warthog is nowhere to be found. You cannot really do anything now. However, if you walk about halfway across the light bridge, you can see the metal "arms" that came out. It is difficult, but possible, to jump down onto the arms. If you have good balance, you can walk on the narrow arm to the wall. Once there, you can duck down and crawl into the hole. Have the second player kill himself so that they are in the hole with you. There is a small drop off that leads down a hallway, then a wall. If one person is against the wall and kill the other one, the other one will respawn on top of their head. The player that just died can duck, jump forward, and land back on the arm. You can either kill your friend or leave him there. Crawl out of the hole and jump back onto the bridge.
IPFREALLY.

On top of base at Blood Gulch:
Create a multi-player game with two people and enable all vehicles. Take the Warthog and ram it in the side door leading up to the top of the base. Then, have that person hold Up so it does not fall out. Next, have the other person use the Tank and ram the back of the Warthog. If it does not pop up, try the Ghost and ram it again. if done correctly, the Warthog should pop up to the top of the base. Note: If one side does not work try the other side.
Mcenttfly1.

Get a Ghost. Drive up to the sniper hill on dark ridge (by the base). When you get to the top, quickly press X, then A. You will be on top of the level. This is best done when you have a sniper and/or rocket launcher.
Pchristmas6.

Grenades at Blood Gulch:
Get a few grenades and go to the sniper location behind the red base. If you aim high enough and get it dead center, you can throw a grenade into the hole on the top of the base into where the shotgun, assault rifle, and plasma rifle are located. This is useful if you see someone go in there.
Ne034.

Scorpion in cave at Blood Gulch:
Drive a Scorpion into the cave on the side of the level that has a very narrow opening on one side. There are two entrances to the cave, but if you can get the Scorpion into it, you will be able to destroy anyone who tries to enter. It is an easy way to obliterate your opponent.

Warthog shield in Blood Gulch:
Go to split screen multi-player mode. Go to Blood Gulch in Slayer mode. Take a Warthog and drive it up on the ledge on the left side of the Red Base. Take it up until it starts to tilt, then jump out and hit it once or twice. Half of it should be hanging off the side. Then, take your sniper or any other gun and you can shoot from under it. The Warthog acts like a shield. All shots aimed at you will usually hit the Warthog instead. This may require a few attempts.
Joey Rice.

Scorpion ramp in Blood Gulch:
Flip a scorpion upside down and put it by a base. You can use Warthogs and Ghosts to jump the base and do tricks.
sam.

Block teleporter in Blood Gulch:
You can block the teleporters by putting a Warthog or Scorpion on top of the exit.
sam.

Block teleports:
Take two vehicles and place them over the teleports. This will make it impossible for anyone to escape through the teleport from sniper shots.
Clint.

Good sniper locations in Blood Gulch:
You can easily snipe the other players with a tank. Go to the end of the two parts where there is a large hill. Drive up there in a tank and aim at the other players. You will be able to see the entire level.
Andrew Kochaba.

Set up a tank against the wall and keep backing up. Have a Warthog drive up it, and it will fly on top allowing you to use the gun on it and tear everyone up.
Andy Naumann.

There is a ramp on the blue side of the map on the wall. This place is also a good place to hide, but there is a better place up higher. With the Ghost, go up the ramp, and while holding A, go slightly higher until you have reached your destination -- anywhere works. Make sure you are facing the red side (get out on the right side). Press X to exit and you will fall slightly, but the Ghost hold you up. You can duck or do whatever us needed to stay behind it. You can see the whole map with this sniping position.
halomaster101.

Near the base with the shadow to your right, you can "climb" up the wall and find a sniping post with plenty of warning from rockets and grenades. First, you need to have lots of ammunition, preferably for the sniper rifle and rocket launcher. Next, grab a Ghost. At the base of the wall is a patch of dirt with no grass. That is your mark. When you drive the Ghost, notice that you always get out on one specific side. You will have to drive toward that spot on the wall with that side facing the wall. Then, when you get to a certain point, you can get out of the Ghost and it should push you up the wall, all the way to the top. This is difficult to do. You have to be going at top speed, have to press X about one to two seconds early, and have to go straight at the wall at the patch of dirt. Otherwise, you will end up almost there, not jumping as high, or falling where there is not a decline (and take slight damage). You cannot fall off the back edge, but you can fall forward and either die or take damage.
Aaron Billado.

When you are playing capture the flag, just get the sniper rifle, go to the top of your base, and jump on the little ledge next to the warp. From there, jump onto the warp. This allows you to see the rocket launcher location and have a clear view all the way to the other base.
Tyler Larson.

Get a Scorpion Tank and ride it to the creek between the bases. Park your Scorpion Tank in front of the ladder. Climb the ladder, and at the top you will find a sniper rifle and some ammunition. This will not only block player two, but will give you a good chance of killing him/her if you have good aim.
Adam Elattrache.

Play the level with at least tanks turned on and two players needed. Have one player get in a tank and drive it to the big tree. When he gets to the tree, have him lift his turret to where the big opening in the tree is located. Next, have the second player gets on the large part of the turret. Walk on the turret very steadily. When that player is about to fall, jump forward into the large space in the tree. He can take out his sniper rifle and shoot from this position.
THESIMSTHEYREAL.

There is a perfect sniping spot on the side of the wall by the Blue base. Get the sniper rifle and go down to the right. Walk along the wall and you will see a slant. Walk up the slant to reach the sniping location. You can see everything from up there.
M. Capriotti.

If you are playing as the Blue team in capture the flag, get a sniper and go to the left along the wall before the entrance to the cave. The wall has a dip that goes back into the wall and downward. You can ambush anyone coming out of the cave, and see anyone going into your base.
HARRELLS1.

When at the Red base, get the sniper rifle, assault rifle, and as many grenades as possible. In back of the Red base is a very big hill. Walk up it on the left or drive up on the right. There are two big rocks to hide behind. Take out your sniper rifle and you will be able to see almost the entire field. If someone follows the smoke trail from your bullets and tries to get you, either wait until they get close enough then lay grenades on the floor; start shooting them with your assault rifle; take them out with your sniper before they get barley close enough to hit you; or exit with a vehicle parked close by. This may take a while, but if you keep going back for ammunition and have good aim, you will not get killed once and will win.
Ne034.

Sniper locations in Battle Creek:
There are multiple sniper platforms in various places around the level. You can access the large beam in the middle of the level either from running up it from the ground near the river, or you can jump over to it from one of the sniper rifle locations. On top is the rocket launcher, which is extremely useful in this small map. If you look along the beam, to your left is a small ridge which you can land on and is also a good sniper platform. You can also access the roofs of the structures from the right side if you are looking from the front doorway to the river.
James.

The following sniper positions and strategies should be used for capture the flag. You can get on top of the bases of Battle Creek. At each base there is at least one way to get on top of it. If you are facing the front entrance of either base, on the left side you will find either a rock or a metal wall protruding from the base. Jump on top of the rock or wall then jump up onto the base. On top you will find great sniping positions as well as a hole on top the base for capture the flag strategies. However, the only way to get on top of the base is from outside the base. Also, you can jump through the side window of one of the bases; the one with the rocks around the sides of it.
Snilbert'A'rama.

Cloak in Battle Creek:
If there is a river looking part directly in the middle of the level below the beam, look all the way down the river. On one of the sides there is a cloak. To temporarily stop people from seeing the cloak, you can shoot it with a gun and it will go down in the water.
KLHTULSA.

Hiding location in Chill Out:
In Chill Out, there is a room next to the Over Shields. It has two platforms and a very large pillar. You can get on top of the pillar. Make sure to put on anything higher than 100% health and have some fragmentation grenades and a rocket launcher. Start by grabbing the Over Shield. Then, go to the small platform in between the pillar and the Over Shields. Go in between the pillar and the platform, and back up to the platform. Look at the ground and throw a fragmentation grenade. Immediately before it explodes, rocket jump towards the pillar. You will land on top, and be at the highest point in the level.
Corey Bower and Cody Cusey.

Less enemies in The Maw:
In cooperative mode, when you are heading for the room where you blow up the reactors, stop when you come down the hall with two rectangular computer facing each other. Have one player stay there and the other go ahead and destroy the reactors. There should be no enemies there, except the Monitor and probably some of the really small Flood that jump on you.
Cmsnyder5.

Ambush in Sidewinder:
In the Sidewinder level, go to the blue base. Jump up on the cliff to the left of the base. Then, stand directly outside of the hallway that slants down. Look down, throw a human grenade, and jump. Immediately before it explodes, shoot a rocket down. Hold Back when in the air, and you should make it to a glitched location, with no scenery. Walk around a bit, and you should see a hole that leads to one of the level's tunnels. Stay there until someone comes under the hole. You should be able to jump down and ambush them unexpectedly.
SpartanUNSC117.

Good sniping locations in Sidewinder:
Get up on the mountains. Set the map for all vehicles. Take the tank and drive it up the ramp near the blue base. Go into one of the corners and turn the tank around and back it up into the wall. Then, run and get the Ghost and use the tank as a ramp to get up onto the mountain/cliff/wall. This will take a few attempts. This is a good sniper location.
Mr. Bun.

On the hill by the blue or red base, set it so that you have a Ghost and tank. Drive the tank up the hill by the portal exit. Park the tank's back on the edge of the stage. Drive a Ghost up it and get on top of the stage. Use a sniper or rocket launcher to snipe all of your friends out. They cannot see or touch you. You can fall back onto the stage -- do not get too close to the edge.
Nancie37.

Capture The Flag Throw in Sidewinder:
You must have at least two people on your team to do this trick. When playing Capture The Flag at Sidewinder, have one person get the flag, while another stands at the bar gate with the Active Camouflage and the Overshield. Make sure that he is on your base's side of it. When the other person gets the flag, have them run into the tunnel at the other base and to the gate. When they get there, have them "throw" the flag through the gate by pressing R to bring out your weapon. The person on the other side will pick it up then run with the flag to your base and score a point. This works well when they are getting chased, and they will also avoid being out in the open much.
JKBPS24.

Easy Capture The Flag:
When playing Capture The Flag with vehicles in Blood Gulch or Sidewinder, put in Warthogs and Ghosts in the base. This makes it harder to get in and take the flag. This does not work with tanks.
abad loza.

Completing under legendary difficulty:
If you are playing the levels in cooperative mode under the legendary difficulty setting, have one person stay behind and the other one charge into battle. Keep doing this until the room is cleared. Have the person with the worst inventory go into battle. When they lose their items when they die, you will still have the good weapons.
Dark Link.

Recommended weapons:
The weapons of choice are a shotgun or rifle, and a sniper. This allows you good coverage for short and long-range battles. The sniper helps you take out people that unaware you are aiming at them or in tanks. The shotgun is useful in close combat. Also, do not forget melee attacks and grenades.
DarkLink.

Spin The Gun:
Create a multi-player game with one life instead of infinite. Start the game, find a gun on the ground, and shoot it with a gun that uses bullets. The gun will spin around. Have four people surround the gun, shoot it and whoever the gun points at after its done spinning will be killed. Whoever remains after the final kill is the winner, just like spin the bottle, but with guns.
lasers81.

Fun with vehicles:
In multi-player, split screen mode, create a game type that has all the vehicles. Set up the tanks and Warthogs. Get in a Ghost and try to run into the tanks to do some really cool tricks. Your also can Get the warthog to do some tricks,
Joe Bell.

This trick can take a while to set up, but if done correctly the results are well worth the effort. Get a group of grenades on the ground in one location. In single player this can be done by killing marines and having them drop their grenades. Note: Marines do not seem to drop grenades under the easy difficulty setting, but will do so under the normal setting or higher. In cooperative multi-player mode, have a player pick up grenades from elsewhere, then have the second player kill them at the desired location for them to be dropped. Park a vehicle such as the Warthog on top of the pile of grenades. Throw a grenade onto the pile. The explosion of the first grenade will set off the others a split second later, launching the vehicle on top of them high into the air.
raziel007.

Go to the Blood Gulch level. Set the level on all vehicles. Park the Warthog's tail end touching the base in between one of the gaps of the "shields" up on top. Get the rocket launcher (or tank) and start shooting the Warthog towards the middle of where the it is above the ground. The Warthog will fly up in the air and land on the top of the base. This will not always work on the first attempt -- keep trying. You can do the same with the Ghost, which is easier. Park the Warthog as done before. Then, get some space and hover as fast as you can directly into the center of the warthog. You once again will fly up on top, usually on the first try. Either way, they both make good turrets. Note: You must be careful. If you drive incorrectly on top of the base, you could fall through the center, and thus have no Warthog for the rest of the game. The same applies with a grenade, rocket, tank shell, etc.
LeoPat.

Go to multi-player mode, and then to the select game type. Set the game to infinite grenades, rocket launchers for the weapon, and a Warthog as the vehicle. Choose Bloody Gulch as the level. The name of the game is "Hogball". The only objective is to blow the Warthog as high as you can by throwing grenades at it, then shooting it with a rocket launcher or any combination of the two. This gets even more exciting by hooking up two or more systems together. You can have up to sixteen players and four Warthogs. It is possible to get a Warthog to stay aloft for 9 seconds. Also try to hit it with a rocket on its journey back down.
QGarfieldp.

Set the multi-player settings so all vehicles are on, then choose a level such as Sidewinder or Blood Gulch. Drive a Scorpion Tank to another Scorpion Tank, leaving a small space between them. Find a Warthog and drive over the edge of one of the tanks. You will do flips and spins, and sometimes go high in the air as if they are on a hill. You can also hit into the other tank for even more air and spin time. You may need to increase or decrease the space between the tanks for this to work.
brent smith.

Fun with plasma grenades:
Create your own multi-player settings, and set infinite grenades and all vehicles. Start the multi-player game, then kill yourself. You will get plasma grenades after you have died once. Go to kill the other player. Throw a plasma grenade "under" his body and he will fly all over you. Throw more grenades on him for more fun.
JOSEY.

You can also blow up vehicles with your plasma grenades. Throw a plasma grenade on the door of the Warthog and it will make a barrel roll, flipping sideways. Throw a plasma grenade on the front of the car or on the back of it.
JOSEY.

Try using plasma grenades to stick to Warthogs. Try to get the Warthog to launch into the air, land on, and kill opponents.
Troy Lemieur.

Place a plasma grenade about the length of an assault rifle away from another one on a flat surface, preferably the open spaces in Sidewinder, but not on the ice. The grenade placed second will launch about fifty yards in the opposite direction of the first one then detonate about fifteen feet in the air. Stage battles using infinite grenades and launch them at each other. Remember to back away from the grenades as soon as you throw them.
Troy Lemieur.

Place two plasma grenades exactly on top of each other on a flat surface. Do this by not moving your crosshairs and moving anywhere. Back away and the second grenade should shoot upwardsm making a useful flare for matches with no radar, infinite grenades, and where you need to get you teammates' attention. You can also do this under a cliff when there is someone sniping off the edge and they cannot see you.
Troy Lemieur.