This was excellent. Great atmosphere, controlled well on mouse and keyboard, loved the tension and creepy vibes I got playing it.
Only real complaint I'd have, and I know it was a gamejam game so it's not even really a huge issue, but lack of checkpoints: I died a few times, and having to replay the whole game each time was pretty frustrating.
I'd definitely pay for a longer version of this though. Keep up the awesome work, you have a real talent for making horror games. Excellent job!