I really loved the art style. The character was great and the snowmen were oddly terrifying with their spider-like arms.
There were a few movement bugs: the first time my movement started automatically towards the top-left at one point, and the second time I couldn't look up for a little while. Also the game got really hectic really fast and it was difficult to figure out how to recharge the gun. I'd also recommend some sound effects, I could imagine them going really well with this game!
Good job!