PLEASE NOTE: We take no responsibility for any changes you make to your hardware, software, drivers or O/S as a result of the cheats listed here. Only a few of the cheats listed have been tested and we cannot guarantee any of them will work. If you come across a bad/non-working cheat, please let us know and we will remove it.

Unlock all weapons
At the main menu press X, X, Triangle, Circle, Up, Up, Down, Square, Triangle.
Invisible Player
At the main menu press R1, L1, X, Circle, Circle, Square, Square, R1, Circle.
Level Select
At the main menu press R1 + R2, L1 + L2, Circle, Square.