Enter "DoggieStyle" as a case-sensitive name to unlock all bonuses.
Successfully complete Story mode on the normal difficulty setting to unlock Challenge mode with the normal difficulty setting.
Successfully complete Story mode on the normal difficulty setting to unlock Super Cop mode.
Successfully complete the Roof Tops level in Super Cop mode to unlock No Damage mode.
Successfully complete the Groove level in Super Cop mode.
Successfully complete the Back Streets level in Super Cop mode.
Successfully complete the Villa level in Super Cop mode.
Successfully complete the Under Rink level in Super Cop mode to unlock Incredibly Fit Dog mode. In this mode, you will have unlimited Shadow attacks.
Successfully complete the Pink Starfish level in Super Cop mode to unlock Superdeform mode. In this mode, you will have big head, feet, and hands.
Successfully complete the Abattoir level in Super Cop mode to unlock Fists Of Flame mode.
Successfully complete the Dock Yard level in Super Cop mode to unlock the Cabal Boss multi-player skin.
Successfully complete the Manson level in Super Cop mode to unlock the Maxine multi-player skin.
Successfully complete one of the following chapters in Story mode on the normal difficulty setting to unlock the indicated skin or level:
