At the title screen (not the main menu) enter these codes to access a few hidden Challenge Rooms. They will appear at the end of the Challenge Room list. Unfortunately you must enter the codes each time the game boots up and only one code can be active at a time. These codes only work on English versions of the game.
|EuroGamer Challenge Room||Down, Up, Down, Up, Left, L1, Square, L1, Square, Triangle, Start|
|Fan Made (Arron Sedillo) Challenge Room||Right, Down, Left, Up, L1, R1, Triangle, Triangle, X, X, Start|
|GamesRadar Challenge Room||R1, Triangle, Square, Square, Up, Down, L1, L1, Up, Down, Start|
|IGN Challenge Room||Up, Down, Triangle, Square, Square, Triangle, Down, Up, L1, L1, Start|
|Unlockable||How to Unlock|
|Super hard difficulty||Beat the game once on any mode.|
Contributed By: ididyourdad.