Not really more I can say; it's whack-a-mole! :)
Okay, okay, just kidding. I really like the low-poly art style. I know it's probably a time-based decision rather than an artistic one, but I still like it.
Audio was really satisfying. Maybe a mallet visual or a recoil animation would be all I would add, but otherwise, I enjoyed my time with it. It's whack-a-mole, how could I not? xD