Hey, solid game! My thoughts:
Overall fun: I definitely had fun playing! I played on Android and it was very smooth and allot better than I was expecting, given the restricting nature of mobile games. I would say that some bounces off the roofs didn't not have expected collisions responses, and they would instead drop straight down, but I am nit picking.
UI: could not fault the UI mostly. It fit the theme, had nice effects and was straight to the point. One thing though was the android joystick and jump button did not show up visually. It did take much to find them, but maybe this was an oversight?
Art: obviously a very nice art style. Consistent and effective.
Sound and music: again, top tier sound effects and music!
Overall and very well executed and polished game. And the android port worked perfectly!