Thank you for playing and for your comment! I agree, the artist I collaborated with did a lovely job with the drawings :D
Oh yeah, the game would definitively need polishing. We hoped to be able to implement proper hud which would explain more of the effects and what is going on better, but time ran out for us.
Balancing and improving the spawn points and rate is also something we wish we could've improved.
We'll make sure to try out your game as well!