I like the choice of music, but I play games with the sound off, so thanks for the mute button.
Solid gameplay, that reminds me of prisonbreak games, no bad thing. Nice Gameboy-esq colour scheme and overall aesthetic.
Now for my complaints:
Levels aren't numbered, only named. If I count lazily I think I reached level 14 (The Rat Race) before writing the review.
I often struggle to clean my messes, as my finger slipped from the C key - I find the controls slightly awkward because of it. With the wasd keyset (thanks for including it) you could try adding R as an alternative cleaning button.
Entering narrow passages as in The Cells, was slightly awkward as I kept catching myself on walls.
But despite these niggles, I really quite enjoyed the game. Well done