Level select:
Press R2, L2, Up, Down, Square, Triangle, Circle at the main menu.

Level skip:
Press R2, L2, Up, Down, X, L3, Circle, X, Circle, X during game play.

God mode:
Press R2, L2, Up, Down, X, R2, L2, R1, L1 during game play.

All weapons:
Press R2, L2, Up, Down, X, Up, Square, X during game play.

Lethal charge:
Press R2, L2, Up, Down, X, R1, R1 during game play.

Slow motion:
Press R2, L2, Up, Down, X, Up, L2 during game play.

Punch mode:
Press R2, L2, Up, Down, X, Up(2) during game play.

Toggle gravity:
Press R2, L2, Up, Down, X, L2(2) during game play.

Bomb mode:
Press R2, L2, Up, Down, X, Up, L1 during game play.

Megaforce mode:
Press R2, L2, Up, Down, X, R2(2) during game play. To remove this code's effect, you must restart the level.

Nailgun mode:
Press R2, L2, Up, Down, X, L1(2) during game play. This code makes people get pinned to the walls when shot.