Aliens vs. Predator: Extinction Cheat Mode
To unlock Cheat Mode, pause the game and press R1, R1, L1, R1, L1, L1, R1, L1, R1, R1, L1, R1, L1, L1, R1, L1. Now, a number of Cheats will be available from the Options menu:
* Cheat Win
* Clear Fog of War
* Enable All Levels
* Gimme $10,000
* Player Invulnerable
* Show LZs
* Toggle Unit Spying