Pretty great! Needs a bit more polish in some parts including things like bullet impact sounds. Had a ton of fun playing, and the card upgrades were neat, but I did encounter a few bugs.
I somehow managed to die to the boss and win at the same time, but I was still transported onto the next world, and in the next world the game got stuck at wave 14.
Though I’m happy I did get a second chance due to the boss bug :D Fun game!