Armageddon cheats, and Codes for PS2.
Pause during a game, hold L2, R2 and press Up, Up, Down, Down, Left, Left, Right, Right, Square, triangle, Square, triangle, Select, and Start.
When using Max, hold the Fire button and press the Equip weapon button 4 times.
Kurt in boxer shorts
From the Main Menu, hold L2 + R2 and press Square (x2), Triangle, Square.
Pause during a game, then hold L2 + R2 and press Up, Down, Right, Left, X, Triangle, Circle, Square, Square + Start toplay as a character that is part Kurt, Max, and Doctor Hawkins.
Pause during a game, then hold L2 + R2 and press X, Circle, X, Circle.
Panning camera mode
Pause during a game, then hold L2 + R2 and press Circle, X, Circle, X.
Fart sounds from Doctor Hawkins
While playing as Doctor Hawkins, press L2 + R2 + Left + X.