Love the take on the theme! It's very satisfying to pull off multiple hits on the boss when you align yourself just right. It would also be interesting to see different obstacles that produced different effects onto the player when they make contact. (ex. bounce physics, changes in velocity, etc.) My only critiques would be to adjust the range of the slashing ability and potentially update the sprite to better visually convey this new range to the player. I found myself hardly using it with how difficult it was to judge were my hits were landing and the small payoff it had when doing so.