Invincibility & Level Warp:
While playing, press and hold L1 + R1 + Triangle + Square + Circle + X. Then, while still holding them, press Start. After a level warp, press Circle to return to game.
Level 10, 45 skill points & 500,000 gold:
While playing, press and hold L1 + R1 + Triangle + Square + Circle + X. Then, while still holding them, press L2.
Quick experience:
For quick experience, use the level 10, $500,000 cheat as one player, then create a new 2nd player and pay their quest masters. Each is $30,000 and that means you get 30,000 experiece times 4 = 120,000 experience on top of the level 10 you already are.
(supplied by: markheardjr)
