Pretty good effort. Reminds me a little of Shadows of the Empire, in that the levels change type as you progress.
I only reached the Deathstar level, I have to get ready for work, but I'm looking forward to completing it later tonight. Also the saved data screen seems buggy, I keep getting error messages and unable to load data. I'll try using a different browser later and see if that fixes anything.
One small issue, on the character select screen, you can scroll forwards through each character, but not backwards, sure the chars loop and you get back to them by spamming forwards but a back button would have been nice.