Tricky but fun! Love the spin mechanic, it's really novel and not something I'd seen before. The fast pace makes it very difficult, although it works quite well for playing quick rounds to try and beat my highscore.
The pixel art is really effective, and works really well with the three colour palette. Seemed like a good choice for the game - given the speed everything moves it's really good that it's so clear and easy to read.
I could be wrong, but think there were a few moments when zombies spawned on top of/almost on top of me? Wasn't game breaking though :)