Orange Box Cheats:

Unlock All Levels

Press the following buttons during any stage of the game. Left, Left, Left, Left, L1, Right, Right, Right, Right, R1.

Restore Ammo

You can never have enough ammo on this game so press the following buttons at any stage during the game. R1, Triangle, Circle, X, Square, R1, Triangle, Square, X, Circle, R1.

Update Health

Run out of health? Then press the following buttons at any stage during the game. Up, Up, Down, Down, Left, Right, Left, Right, Circle, X.