This game is awesome! There's SO much polish it's incredible.
Weirdly, the criticism I have is that it's "too" good. The parry trumps any other ability in combat. Why run away or double jump around attacks when you can just parry them? Similarly, I would say the particle animation for getting the very first item is more intense and dramatic than the animation for defeating the final boss.
Still, this is a great contender with a creative idea and really good implementation. A full game would be insanely good!