Enter the following codes in the Cheat menu to activate. Note that you will not be able to save your game while any cheats are in effect.
|Unlock all levels||RMTE|
|Unlock all character||CAST|
|Unlock all costumes||WRDB|
|One shot kills||MNKY|
|Unlock all weapons (multiplayer)||DKSD|
|Unlock all weapons (singleplayer)||GTSM|