Game Cheats Codes

On the server PlayStation 2, press R1(2), L1(2), R1, L1 at the “Press Start button” screen. If you entered the code correctly, you will hear the sound of a drum. Press Start to continue with your server setup. The code does not need to be entered on the client PlayStation 2s that will join the game.
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Successfully complete the game on any difficulty setting to unlock the Warfighter difficulty setting.

While running, quickly tap L3 to slide along the ground or hold L3 to do a sort of belly flop and slide on your stomach.

At the title screen, press X, L2, Triangle, R2, Select to unlock all missions.

At the title screen, press R1, L1(2), R1(3) to unlock all maps in Quick Mission mode.
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Press any button to interrupt the opening sequence, then quickly press X, L2, Triangle, R2, Select as soon as the title screen appears to unlock all missions. If you entered the code correctly, the start up screen will have a different picture.

Press any button to interrupt the opening sequence, then quickly press L1, L2, R1, R2, X, Select as soon as the title screen appears to unlock all specials features.
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At the level selection screen, hold L1 + R1 and press Triangle(4). Hold R1 to skip a level or group of levels.

Hold L1 + R1 and press Square, Triangle, Square, Triangle.