Enter the following codes during gameplay to enable the corresponding effect. If the code has been entered correctly a small confirmation window will appear. When you use codes it will disable Achievements until you restart the game.

Unlock ALL Weapons:
Press Up, Up, Down, Down, Left, Right, Left, Right, A, B.

Gawd Mode (Invincibility):
Press Up, Up, Left, Right, Left, Right, Down, Down, R1, X.

Super Stomp:
Press Left, Left, Up, Down, Right, Right, Up, Down, RB, A.

Unlock ALL Styles:
Press Left, Left, Right, Right, Up, Down, Up, Down, A, B.