Nice game! I definitely enjoyed trying the different types of weapons. I think this could do well as a controller/twinstick option as well, but the controls with keyboard and mouse were solid.
I didn't realize that I had won until the nice outro animation :)
The points in the comment by NicolasGatien are definitely valid. That being said, I will keep an eye your for your BOSS RUSH jam game!
Last note: Was I supposed to be able to interact with the flying santa head? haha