It reminds me of Super Meat Boy. Fast, hardcore, lot's of deaths.
Also, there is a nice work with shaders and post-processing. I am not good in this kind of games, but I think making the learning curve just a little bit smoother will be a good idea. The first 3-4 levels are easy and just introducing the mechanics, but then the game becomes incredibly hard all of a sudden. It may be just my personal issue, since, as I've mentioned before, I am not good in this kind of games.
Overall, it's very fun to play, and looks really polished. Well done!