What a great game! It's a really creative take on the theme, has EXCELLENT art and audio feel, has of nice arcade-y features.
Stuff that I think may use improvement: Not much, honestly. I think the game just has one glaring issue - the scroll input needs to have a sensitivity toggle. It seems to be tuned to the mice used during development, and that makes the game a little frustrating to play (we've kind of used a this idea in our own game).
All in all, lovely stuff! Good luck!