Master cheat code: Enter Y, Black, White, Black, Y, X, White, X at the cheats screen under the extras menu. All cheats will be unlocked. Alternately, enter Y, X, B, X, Y, A, B, A at the cheats screen under the extras menu. Master option code: Enter White, White, X, X, Y, Black, Y, Black at the cheats screen under the extras menu. All normal game options will be unlocked. Level select: Enter Black, Y, X, White, Y, Black, X, X at the cheats screen under the extras menu. Super health: Enter X, X, Y, White, Y, White, Black at the cheats screen under the extras menu. Unlimited ammunition: Enter Y, White, X, Black, Y, Black, X, White at the cheats screen under the extras menu. Unlimited grenades: Enter Black, X, Black, Y, X, Black, X, Black at the cheats screen under the extras menu. Rapid rails: Enter Black, Y, Black, Y, X, X, White, White at the cheats screen under the extras menu. Bouncy grenades: Enter Black, Black, Black, Black, Black, Black, Black, Black at the cheats screen under the extras menu. Gibby explosions: Enter White, Black, X, Y, White, Black, X, Y at the cheats screen under the extras menu. Gibby ammunition: Enter X, X, X, X, Black, Y, X, X at the cheats screen under the extras menu. Fat mode: Enter Black, Black, Black, Black, White, X, Black, Black at the cheats screen under the extras menu. Directors cut: Enter Y, X, Black, White, Black, X, Y, White at the cheats screen under the extras menu. Walking dead: Enter X, X, X, X, X, X, X, X at the cheats screen under the extras menu. Wacky deaths: Enter White, White, White, White, White, White, White, White at the cheats screen under the extras menu. Rain of fire: Enter Y, Y, Y, Y, Y, Y, Y, Y at the cheats screen under the extras menu. Explosive personality: Enter X at the cheats screen under the extras menu. Press Use on someone and they will gib. Joke message: Enter Y, X, Y, X at the cheats screen under the extras menu. Regime: To unlock Regime, do the bonuses missions in single player mode at under the easy, medium or hard difficulty setting.