That was very fun!
The door transitions were great. Vintage survival horror technique.
And I had fun going for a loot, even if the controls for collecting things are a bit awkward.
(Like, I don't think the inventory had to pop open every time I collected something, and it was a minor pain to close it. Also, sometimes the retical would get stuck on red for whatever reason.)
Only thing it's desperately missing is some spooky sound design.