Very pretty and stylized art, and I think the bosses were designed really well, with clear and telegraphed movesets. The attacking mechanic is also unique and interesting. I quite enjoyed the healing mechanic of the game as well, you implemented it well and it seemed to fit the gameplay. Not sure about the lives though. Restarting the whole game from the beginning is all well and good for something like a roguelike where you upgrade the character, but I didn't see much point in it for this game. I think it would have been better, at least for the game jam version, to just spawn the player at the last checkpoint no matter how many times they die to a boss.