The game controls pretty well as-is, presentation is OK and enjoyable, if short. One of the minibosses seems to be more or less a dead end. It took a fair hit on "genre" from me because it feels more like a topdown shooter with very light exploration elements as-is, but like others I can see where you might go to make the exploration/character progression interaction more advanced.
Also, like Redz below, I more or less cheesed the eyeball monsters.