Pause the game and enter the following codes:Invisibility:
Hold R1+L1 and press Square, Square, O, O, Triangle, XInvincibility:
Hold R1+L1 and press Triangle, Triangle, X, X, Square, OAll Inventory:
Hold R2+L2 and press X, Square, O, Triangle, Square, OReset Health:
Hold R1+L1 and press X, O, Triangle, Square, X, OReset Magic:
Hold R1+L1 and press Triangle, O, X, Square, Triangle, OAll Power-Ups:
Hold R2+L2 and press Triangle, O, Square, X, Triangle, XLevel Skip:
Hold L1+L2+R1+R2 and press Triangle, X, Square, O, O, O
Thanks to Revolution readers Captain Canada and Matt Woolvett!