Hello there, I just recently played through the demo for your game and I really enjoyed it. The atmosphere is certainly dark and unsettling, visual wise the game looks good but most importantly the audio is excellent. The subtle whispers that echo through your ears as you explore the rooms contributes a great deal to the overall feel of the game, the voice acting is also well done and is a really nice touch to the game. The story is also pretty easy to follow along with, though I hope a bit more context will be given upon the full release.
I couldn't really find any faults with the demo, apart from the door to the code puzzle room randomly disappearing when I walked through it, and the fact that the demo ended so abruptly, I thought the game had crashed for a moment.
I think that this is a fairly solid demo and a good taster for what's to hopefully come. The correct pieces are definitely in play here, so I hope to see this project come to completion some day.
I hope you don't mind but I made a short let's play of the demo for my channel.
Cheers and best wishes!