You focused on a simple idea and made it polished and fun! It's missing some juiciness, but the core gameplay feels nice and fair! I guess one thing I would tweak is the length of later levels - at least for me, after like level 12, they felt unnecessarily long, and at this stage the game is still relatively calm enough to recover if you get accidentally hit.
Solid entry! If it was an 80's arcade machine I'd be stuck with it for hours!