This game is incredibly well polished and has a specific gameplay style which is executed absolutely brilliantly. Each attack feels meaningful and damaging but not to the point of feeling clunky. The art style is apt for the mood and the difficulty is fair but difficult.
I have very few criticisms of this game except for perhaps that it could be fleshed out some more, perhaps with an upgrade system, if you want to go the route of a Learn to Fly meets Canabalt meets Dark Souls.
This game is a pleasure to play, excellent job!