Great game. A must have.
You can play as either anakin or obi wan. You must first rescue the chancellor . It gets harder when you fight count Dooku. So here are some cheats you can use. You can enter them at the options menu.
Unlimited Health: XUCPHRA
Unlimited Force: KAIBURR
This should get you through count dooku. if you like using cheats after mission 10 you play as anakin do unlimited force (cause force lightning is a easy kill. And for all you peopls that think this game was too short it is wrong, it is a great legth for a 2 hour movie. Good luck and may the force be with you.