Cheat mode: Press RB + LB, X, B, Y, A(2) during game play to enter "Cheat Entry" mode. Then, enter one of the following codes to activate the corresponding cheat function.
Full health: Press Y, X(2), Y, A, B at the "Cheat Entry" screen.
Full Ammo: At the Cheats Menu, hold L + R then press B, B, Y, X, A, Y.
Achievements: Complete the following achievements to unlock Xbox Live Gamerscore points.
Jump Training (5 points): Complete Jump Training.
Go Go Go! (5 points): Get pushed out of the plane in any mission.
Greased Landing (5 points): Touch down with a greased landing.
Flared Landing (5 points): Touch down with a flared landing.
Death From Above (10 points): Kill an enemy with a melee kick.
Jump Master (25 points): Discover one skill drop location in each mission.
Master Parachutist (40 points): Discover all skill drop locations in the game.
Crack Shot (25 points): Get 10 headshots in a row.
Tick-tick-BOOM! (20 points): Kill three enemies with a cooked grenade.
5-in-a-row! (20 points): Earn a 5-in-a-row.
Homerun! (10 points): Kill an enemy using sprint-melee.
Shoot to Kill (10 points): Kill an enemy while moving in iron sights.
In Yer Face! (20 points): Kill an enemy by kicking a grenade at him.
Purple Heart (10 points): Recover full health after being in verge of death state.
Pop-n-Drop (5 points): Crouch-sprint between cover objects.
Weapon Handler (25 points): Fully upgrade one weapon.
Weapon Specialist (50 points): Fully upgrade five weapons.
Weapon Master (75 points): Fully upgrade all weapons.
Cheat Death (20 points): Complete any operation without dying.
Village of Adanti (15 points): Complete Operation Husky.