I love the presentation in general! The AI sometimes bugs out and sticks to a corner, but I didn't encounter the same spawn problem other people seemed to face.
I think the final bit with the monster could be implemented better. It feels cheesy to lose instantly because your progress doesn't seem to matter that much at that point. Maybe a better way to have the game end would be to stop the flies from spawning so that you're left in a last person standing situation with the other players?