Thanks a lot for the feedback! You are totally right about the flashlight, the experience was much different from what I was seeing during development because I always keep my monitor brightness really low, so lighting was way higher than intended. I've fixed it now.
You're right about a visual cue for how doors would react to light, I should have thought about it.
About the monster: I didn't want them to be frustrating and also you weren't really meant to see them before they would aggro. As in outside the flashlight cone it was supposed to be almost pitch black so that when you actually see a monster it's because you're shining light on it which also makes it aggressive.