Infinite lives
Pause the game and press Right,Select,Triangle,Select,Triangle,X. A message will appear when entered correctly.
submitted by Video Game Master

Unlock All Levels
To open all the levels, pause the game and press Right,Select,Triangle,Select,Triangle,R1,L1,R1,L1,Circle. A message will appear when entered correctly.

Skip levels
When the high scores screen comes up after dying, press X,X,X, Circle Up Down Up Down Start.
submitted by R6302

Cheats