This is one of the best games i played so far. I love how you get stronger when you get a new level and when you lose too. So the game always rewards you.
The controls are very smooth, it plays really well.
The art and animations are gorgeous. It is really impressiv how you did this within three days.
The only thing i noticed is, that the UI is very big and seems to be in the way. Yet, you have managed to make a very well made game. Amazing work!