That's very moody ! You managed to pull of a procedural level generation system that produces believable forests and islands, that is pretty impressive !
The survival mechanic is cool, but the balance, combined to the lack of feedback on important information make it a bit frustrating to play. You have to protect a fire with no visual indication of its state, the enemies kill you instantly but are barely visible, and once you hear them, you've already lost. I think that with feedback on those two things you can make it really fun to play.