Really really really good job. Great writing, good pacing, a little too easy on normal difficulty, will try hardcore later - the only issue I had was heating. Health was plentiful, so was ammo. The puzzles made sense and were not overly nonsensical as RE7 sometimes did (the only 2 things that stood out were the 2 lockboxes with shapes - kind of out of place that they would use those).
The idea that the enemies see you less the colder you are would be nifty but it kind of loses meaning since you cannot skip any of the enemies - you have to kill each one to get to the items. It's a nice story touch still.
Oh. And you can't drink the whiskey. It'd be much better if you could drink the whiskey. For warmth. Cause The Thing :D