This is a cool idea and I had fun playing it. The graphics are simple but all fit together quite well and are nice and crisp. Fits the theme decently as well.
I have to say I didn't enjoy having to start over from the beginning each time especially since the ending levels were quite complicated. It basically became a trial-and-error game where the only way I would win is when I memorized the route out after dying a bunch of times. Would have preferred more levels instead as a way to make the game longer.
Regardless though good job!