I would say this is a very impressive game for its current state of development. The aesthetic is dead on, it feels like a walking simulator, and it's interesting to simply explore the environment to find new levels. I would say the most important things to add to make it an actual game are definitely more sound cues/ambiance and some sort of threat to keep players on their toes (and thank you for no cringe).
Probably an issue with having to write to the map file and bogging down the frame rate but expect using the flashlight to be a minor performance impact. I'll be excited to update this review as more comes out!