First of all, the music ( Oh god the music ) was awesome
I loved the variety in enemy types, you also introduced them gradually and had a good difficulty curve. I also liked how the traps set by the other enemies would hurt other enemies as well introducing a small layer of strategy. My main problem in the game though was a lack of feedback. I couldn't really tell if I was hitting an enemy or if they were really doing damage to me. Any sort of feedback would have helped. The game is still nice though. Good work