I think you did an awesome job with boss and especially the sound design. Good SFX disappears into the game and is embodied by the character so much that you don't even think about - and you nailed the SFX for sure. I would have liked to see the controls being indicated in game (I didn't know I could double jump and got stuck trying to reach the arena for a short while) and more bosses. The game plays smoothly. Well done!