This game is also available on N64.
NDNLP - Spirit Mode
THMSCLS - All Weapons
RBCHN - Big Heads
GNNTRTMNT - Full Map
JSNCRPNTR - Tiny Enemies
CRLSFNDNGS - Purdy Colour
SHNTRRNT - Gallery
DNLDDCK - Quack Mode
NGLCKCK - All Keys
JHNNCK - Disco Mode
8o128e9booo7 - Get all Keys
JFFSPNGDNBRG - Infinite Lives