I think I beat the game? I hit a large empty room with no doors or enemies. The graphical and sound effects are phenomenal. As stated before, some performance issues in browser.
I think the light bubble around the player should be slightly larger. There were several times I was walking backwards away from a swarm, and an enemy spawned behind me for a cheap hit.
Combat drags on a bit, I think enemies regrow if you don't finish them off? If that's the case, they should regrow a little slower.