Bruggs for the win! Their arrow swarm is so deadly =)
Love your pixel art a lot! And the music fits nicely too, maybe a bit repetitive in the long run?
Sometimes placing a fighter doesn't work and it gets stuck with an offset. You might want to look into this.
Can definitely see this as a fun small game with some more work and polish. Had fun with it!
And, please, say hi to your QA team ;-)