nice game, looking nice and fun. I wish the effects were more clear what they do. I think the effect that makes the enemies strong is too powerful. the bow is way better than the hammer because I can just run around and shoot, for the hammer is more like hit-back-hit-back and its more interesting. Maybe think of locking up the room until you clear all enemies (like in binding of isaac), I could just run and jump over all enemies and quickly reach to the boss. The X button for attack isnt comfortable if Im using WASD, maybe add another button for that.
Overall very nice results in the short time limit, nice art and animations.