I enjoyed your game a lot, very simple mechanics and yet very effective! The boss design is clever without being unnecessarily punishing, I wouldn't mind playing a version with a bit more bosses, but as someone else said in the comments, it's already quite huge for a jam game.
One improvement would be to add a sound + visual cue when your character loses health. The first time I got hit by a laser, my guy just stood there like a chad. That felt a bit off.
The character's noodle arms are cute too!