This isn't really a cheat but it's something fun to do. First go to the level "Darth Maul" in episode 1. Pick Free Play. Choose Jango Fett for your character. When you get to the end and battle Darth Maul press "A" and fly to the wall. When you get to the wall keep flying at it and you should fly up it. You can use this technique to shoot Darth Maul and to protect yourself.