When you appear at the beginning of the first level, turn around and you'll see Chewie standing at the end of the walkway. Go up and press Y to talk to him. After that, he'll follow you around the level. When things get tough, he'll step in and take some of the blasts shot by the enemies. He roars a lot but I've yet to see him die from the damage.
Unlocks all levels up to Darth Maul
Go to the main menu. Select New Game. Then type in M1A2U3L4!? That should unlock all levels up to Darth Maul.
Easy Jin'hah Defeat
On Secrets of Black Heth level an easy way to destroy them is to get them by a ledge and use Force Push (left trigger then y).
Easy way to kill Darth Maul
The only easy way to kill Darth Maul is to stay as far away from him as you can before he strikes down at you move out of the way when he does this and counter attack him with a force manuver of your own( mine is the turn spinning saber strike) hold r and use the analog stick. to beat the timer you have to be very good and know darth maul's weak points to kill him quickly.
Force Slow
Force Trigger + White Button = "Force Slow".
Battle Royal mission
Defeat Darth Maul in level 25 to unlock the Battle Royal mission, where you have to fight eight other Jedi Masters in the Saber Arena.
Additional versus mode characters
Defeat a character in the Jedi Arena during game play to unlock him or her in versus mode.
