Play as Drizzit
Select "New Game" at the main menu, select one of the three default characters, then hold LR until the game completes loading.
Invulnerability and Level Warp Cheat Menu
During game play hold down L R Y Left On Control pad and press start and the cheat menu will appear.
All spells, feats, and 100,000 gold.
During game play press L R X Right On Control Pad. And then cycle through your spells list to see if the cheat worked.