Though this is just an early alpha build for the game I feel that it was quite well done. The camera mechanic is really cool and I can't say I've seen anything like it used to this extent in a game before, this is definitely a better use for it than just having it for the sake of having a camera, it's an integral part of the story and makes sense here.
The game looks pretty good and sounds good as well, environments are well detailed and the puzzles are simple enough to figure out.
The only gripe I had was with the camera controls, as they aren't readily available in the game (Except if using a PlayStation controller), but that's only a minor thing, I see that you included them in the description of the game but I must have glossed over them.
Given that this is only a small slice of what's hopefully to come, there aren't too many things I can point to with a review, the camera mechanic is great and definitely adds something to the game, it looks and sounds good, and the story is pretty interesting.
I hope you don't mind but I recorded a short let's play of the demo for my channel.
Cheers and best wishes to you.