Enter Circle, Square, Circle, Square, X, X, Triangle, Triangle at the cheats screen under the options menu.
Directors cut
Enter Square, X, Circle, Triangle, Circle, X, Square, Triangle at the cheats screen under the options menu.
Gibby explosions
Enter Triangle, Circle, X, Square, Triangle, Circle, X, Square at the cheats screen under the options menu.
Master code
Enter Square, Circle, Triangle, Circle, Square, X, Triangle, X at the cheats screen under the options menu. Alternately, Enter Triangle, Triangle, X, X, Square, Circle, Square, Circle at the cheats screen under the options menu.
Super health
Enter X, X, Square, Triangle, Square, Triangle, Circle at the cheats screen under the options menu.
Unlimited ammunition
Enter Square, Triangle, X, Circle, Square, Circle, X, Triangle at the cheats screen under the options menu.
Unlimited grenades
Enter Circle, X, Circle, Square, X, Circle, X, Circle at the cheats screen under the options menu.
Walking dead
Enter X, X, X, X, X, X, X, X at the cheats screen under the options menu.
Wacky deaths
Enter Triangle, Triangle, Triangle, Triangle, Triangle, Triangle, Triangle, Triangle at the cheats screen under the options menu.
Rain of fire
Enter Square, Square, Square, Square, Square, Square, Square, Square at the cheats screen under the options menu.