Invincibility: Pause the game and press Square, Circle, Left, Right, Circle, Square.

All weapons: Pause the game and press Left, Circle, Right, Square, Right, Left.

Level skip: Pause the game and press Up, Down, Left, Right, Right, Left, Circle.

Level select: Save the game and return to the main menu. Select the "Resume Game" option, then highlight the previously saved game and press Up, Down(2), Up, Left, Up, Right, Down.

Infinite health: Pause the game and press Square, Circle, Left, Right, Circle, Square.

Maximum ammunition: Pause the game and press Left, Right, Circle(3), Right, Left.

Fatboy Mutator: At the title screen, press Circle(3), Up, Down(2), Up, Circle(3). Select multi-player mode and choose the Fatboy Mutator. Get killed to have the new Mutator get thinner. Get a kill to have the Mutator get bigger.

Stealth Mutator: At the title screen, press Square(2), Circle(2), Square(2), Circle(2). Select multi-player mode and choose the Stealth Mutator.