Awesome work, got to the end chair (?) despite two things that worked against me:
1. the camera is really annoying, once I figure out that scroll changes the angle it was a bit better (I could lower it), but then the torch particles start blocking the view :P
2. The mushroom puzzle isn't obvious and I got through the first one by going around the door and the second one I did by mistake and could then eventually figure out, I think it needs a bit of a tutorial (for me wasn't really obvious which mushrooms are poisonous, is this related to red/brown etc.). The puzzle itself is very simple, but the presentation could use a bit work,
3. 3d platforming is hard, so I won't really say much, but getting stuck on the ledge just in front of the second door was a pain :P)
Now, even though it might seem like it was a bad experience, I had tons of fun, the feel of mystery and adventure is really there and I was legit a bit sad when it ended, just as I got the puzzle down and started figuring out the camera. I'd play a few hours of this for sure (with a fixed camera :P).
Amazing!