Unlock all spells:
Press and hold L1 R2 L2 R1 in that order (while in game) and press up down left right right left down up. Each time you enter the code, your spells will gain a level from 1-3.
Be Invincible:
Press and hold L1 R2 L2 R1 in that order (while in game) and press X, Down, Triangle, Up, Circle, Right, Square, Left
Max Health:
Press and hold L1 R2 L2 R1 in that order (while in game) and press Triangle, Down, Circle, Left, Square, Right, X, Up
More Cash:
Press and hold L1 R2 L2 R1 in that order (while in game) and press Circle, Square, Right, Left, X, Triangle, Down, Up
Level Up Character:
Press and hold L1 R2 L2 R1 in that order (while in game) and press Square, Triangle, Circle, X, Right, Down, Left, up