Game Shark Codes:

Unlock All Levels
80064A24 FFFF

Infinite Lives
801A3E14 0063

Press square for more time
D0195A2A 7FFF
800689B8 049F

Press L1 for key
D0195A2A FBFF
801A3E30 0014

Press L2 for hammer
D0195A2A FEFF
801A3E30 0013