Awesome. The mapping is fantastic and the tint sets an uneasy mood. My only complaint is that the auto-shadow located near the waterfall looks out of place. I'd probably remove it altogether. Also, the waterfall is a bit hard to see (if that is a waterfall). Waterfalls are quite opaque in real life.
Yeah, nice catch on the shadow! I see what you're saying and totally agree. As for the waterfall itself, I definitely see it now. It's a bit more salient in-game due to the animation, though. The opaqueness doesn't really come through with this pretty strong tint. I might not have time to tweak it in PS before Saturday, but I'll try.