So first of all, a really neat concept. I especially liked the idea of the snowmen not actually being able to harm you, just throw you into the freezing ocean.
Gameplay: it was just soooooo sloooowwwww. It got very monotinous, and when you died, it was more a, "awww commee oonnn! I have to do that alll ooovvvveeerrr agggaaaiiiinnnn" instead of the "Darn it! One more try!" feeling that you usually want from a game like this
Music/SFX: the Sound effects were quite cool, and added some character, but I really wish there was some background music instead of just the wind howling
Graphics: The post-processing was nice, but the pixel art needs a bit more work. The player having more than just two frames of walking made it soon very stale, and it would have been nice for a buttom prompt to appear when you can interact with something