The Orange Box Cheats for PlayStation 3
At any stage during gameplay enter these codes to enable the effect you want.
Unlock ALL Levels:
Press Left (x4), L1, Right (x4), R1.
Create a Cube:
Press Down, O, X, O, Triangle, Down, O, X, O, Triangle.
During gameplay enter the following codes to enable the effect you want on a level.
Restore Health by 25 Points:
Press Up, Up, Down, Down, Left, Right, Left, Right, O, Button, X, Button.
Restore Ammo for Current Weapon:
Press Triangle, O, X, Square, RI, Triangle, Square, X, O, RI.
Also on: Xbox 360, PC, check out those pages for more help with this game.