Great work.
I've played the long demo and had a good time. I found all secrets as well. The water toggle mechanic is a good idea, and your execution was by the book. My only complaint is that not all puzzle setups had a good overview from the starting point (I think of last chamber of the bottom path.). In other chambers like the maze like system this would be ok, because a maze should be confusing right? And in the bottom path I could have missed the initial view on the final totem by walking to the left straight ahead, but this is nit-picking.
Great work, this is a very solid demo 👍👍
Und herzlichen Glückwunsch zur Nominierung beim DCP