Even though it's a simple game, it was super satisfying to play. My only criticism is to maybe make the hitting-enemy sound quieter and maybe have a the sound vary in pitch, since it does get a bit repetitive. It might also be a good idea to somehow visually show the health of each enemy, maybe not with a health bar but with a cracked version of their sprite. Nevertheless though, this game is awesome and has a lot of potential, great job!