That was an awesome concept executed in a good way. I was tense for the whole playthrough, also thanks to the pixelated graphics. The industrial complex was a great choice for a setting. The ending was a bit predictable but maybe because a lot of games uses that trope. It was a nightmare... but wait, it's actually a nightmarish reality. So, yeah overall a solid horror experience.
As an ending note I left something weird and funny which happened to me during my playthrough. I didn't want to bring this up in the beginning, because it didn't ruin my experience, but it's worth mentioning.
So I was a dumbass and I haven't read the controls and didn't know that RMB was the flashlight button. So I figured it might F or L which are standard controls for a flashlight in video games. I pressed F, nothing happened, but when I pressed L the whole map was immediately illuminated by light! It looked like the light sources were coming from the floor. I don't know how to describe it, I'm just a player not a developer, but yeah, basically dark, industrial corridors were suddenly bright as in pure daylight when I pressed L.
My theory is that it is probably some lighting error, but I don't know, I could be very wrong.
So yeah weird glitch/bug which I could use to my benefit, because I could see the monster from far away and flashlight was basically useless. Or maybe it's a purposeful cheat code haha
Best of luck in creating the next games!