Ey, that's pretty good.
Only real things I have to say are: I think a custom and VERY visible cursor could help a lot - it was hard to tell where my cursor was at times so there were some times where I wasn't pointing things the way I wanted. That's a minor complaint though.
And also that the game leans a bit too much on the easy side what with the health regeneration and how easy it is to avoid damage by purely being stacked.
Aside from these, game is pretty enjoyable. Short and nice. I've featured this game in my showcase video: