Well, that was quite a cool little experience. It gave me Silent Hill-vibes and the music choice was great. I never did catch up to the dog-thing you see run off at the first footbridge.
I encountered a couple of geometry bugs that caused my character to get stuck, but I'm not sure if I was on the most recent build since I downloaded on the 17th.
First one is in the trees next to the first mon/gate.
The second is at the foot of these stairs. As I walked towards them, the camera swung around and I get stuck.