Boy, this game is hard.
My friends and I have been playing for a couple of weeks and we
have not yet finished it. The Death Star still eludes us. For the
first nine levels there are passcodes for three of them. 

Chapter Three : Falcon

Chapter Seven : Anoat

Chapter Ten   : Yuzzem

Good luck, and May the Force Be With You !

Yeh, I know kinda corny.

:)