Hey first game of the GMTK Jam that I have played! I saw that it was a reverse Vampire Survivors and knew I instantly had to try it. Similar idea to my own game when you are fighting against heroes instead of being the hero.
It was pretty neat how you tied in some choices at the end of each round about which type of enemy you wanted to add. Also interesting about when to add (like now or in the next few rounds). The game was hard though! I tried twice and lost both.
Some instructions in the game itself might be nice. I was completely bewildered for the first 15 seconds or so, but then came back to the homepage and found you need to right click.
Overall good work!! Good luck fellow Survivors like jammer!