Nice work! I love the simplicity. The auto-shoot feature reminds me of Vampire Survivors in a good way. If you were to continue working on this game, I think you could implement different randomized upgrades you get from each blob monster you shoot. Upgrades that affect fire rate, the type of laser, speed, etc. My only critique is that sometimes the monsters spawn on top of you and you automatically lose health without getting a chance to shoot them. Nice work overall.