Love the filter and general layout of the rooms. Very random and weird. Perfect for this kinda game. Sounds was also great.
On my second run, once a new there was a spider I feel like the sounds creeped me out a ton (ie the game did its job). I think somehow you introduce the spider to kinda let the player know what the monster you could creep them out from the beginning.
Also I think i'd tone down the scan lines. They are very cool but less is more in my opinion. Hard tho when you spend time of something like this tho. I always find myself overdoing it. You really want to user to experience it.