Star Wars: Republic Commando

Invincibility:
Pause game play, then press Y(2), L, Up, X, Black, X, Y. An explosion will confirm correct code entry.

Full ammunition:
Pause game play, then press Y(2), X, Down, R, L, R, Up. An explosion will confirm correct code entry. All current weapons will be fully reloaded.

Foley featurette:
Successfully complete the Geonosis campaign.
eaensma.

Spec Ops featurette:
Successfully complete the Assault Ship campaign.

Temuera Morrison interview:
Successfully complete the Kashyyyk campaign.
Hint: Defeating Droidekas:
To kill a Droideka easily, stand as close as you can to it, and directly in front of it (between its gun arms). It cannot shoot you. Kill it with melee attacks to save ammunition. Note: If there is more than one Droideka, stand so that you are in line with as many of them as possible so that the others cannot see you.
Alex Newton.

Hint: Defeating Greivous' Guard:
Use your EMP grenades and concentrate your men's fire on them. Once they are being shocked by the EMP, throw Thermal Detonators to deal extra damage. You should also use your DC-17's anti-armor attachment.
Jake Adler.

Hint: Defeating SBDs:
Throw two electric grenades and fire a quick bust from the DC-17. This should shut them down or put them on the ground.
Banks Brazell.

To defeat a Super Battle Droid, run up to him while he is shooting at you. Then melee him and back up before he can hit you. While he is swinging his arm, fire at him with your blaster. After he melees, he will resume shooting at you. Repeat the process until he is destroyed. If there are two SBDs, concentrate your team's fire on him.

Get your squad to attack the Super Battle Droid. Then, take out a sniper rifle and shoot them where there face would be. Take out the arm that does not have a blaster. Then, take a few more shots on its upper body.
William Bell.

Hint: Free electrocution:
Use the following trick to shock a droid at no cost. Have a concussion rifle and use its melee strike to stop and drop a droid in hand-to-hand combat. The shocking effect on droids is the same as if an electronic detonator was used.

Hint: Ghost Ship Recon: Lightsaber:
On the level where you first encounter the Trandoshan Elites (the ones with the minigun), just before you find the elite there is some debris you can blow up. Instead of doing this, turn right and crawl into the vent. Once you get inside, look behind you. You will see ad ead clone with a lightsaber. Note: You cannot use it.
Acavina.

Hint: Ghost Ship Recon: Save ammunition:
When you are on the ghost ship, you will not find any D-17 ammunition for awhile. Save it and spread all your ammunition around. You will get a shotgun type weapon during the game that is average, but not as good as the D-17. Also make sure that you have a sniper and ammunition for the droids.
Adam Mckaig.

Hint: Team Deathmatch: Easy kills:
To get easy kills on Deathmatch or Easy Deathmatch, if someone is under the lift at the bottom, activate it and you will kill them.
Sonic130296.

Hint: Avoiding hits:
When you are hacking a computer, placing an explosive, etc., crouch before pressing Use. You will not be hit as often. Enemies often spawn as you do the action.

Hint: Recommended weapons:
You can kill more droids by using a shotgun.
Nickkreber.

Different weapons work best against different opponents. When up against droids, use the DC-17. When up against Trandoshans, use their own weapons against them. The shotgun is especially potent against slavers, while the submachine gun is better against mercs. Do not waste bowcaster ammo on droids, as it is overkill. Use charged shots on Trandos.
Sean Wellington.

Shotguns and ACP array guns work very well against organics, such as Slavers and Trandoshan Elite. They are also affected against flash bangs. Just make sure you are not looking at the flash bang. When going against droids, use the DC-17 and its additional attachments. The regular battle droids are easily taken out by the rechargeable pistol. The pistol also works well against the average Geonosians.
ThunderWave200.

Hint: Mutiny:
Take out your pistol. Shoot at any of your squad. Hold out for a few minutes and dialogue. Your squad will consider you as an enemy. Take them out and you can fight anything else. At the beginning of a level your squad will return to life and will be on your side again. On the Kashyyk level, just take out a Wookie or two. Note This might require a few minutes.
Matt Byrum.

Glitch: Walking turrets:
In the Wookie level hanger, enter a gun turret. Use the Left Analog-stick to slowly move the turret around the hanger. You can even take it off the edge of the platform. You cannot fall off, even when you get out -- you will return to the platform.
Fordtunerjosh.

Glitch: Number Infinity:
Complete the game, then create a new profile. Then go to multi-player mode, and then two player. The at the options screen,choose split screen. Choose two different profiles for the two players. Then, go to "End Game" while playing in two player mode. Then, choose "Load Game". You should start with no squad except for 62 and Infinity. Note: You will not see both bots. You will either hear someone dying or see a Geonosian over a dead clone. If you or 62 revives Infinity, you will not be able to complete the game.
Nicolas J. and Harley Colton.