This game was charming. I really enjoyed the way you did the tutorial of telling the player what not to do and the devil's dialogue was great.
I think if I was to pick something to improve it would probably be to add more for the player to utilise to be able to find the door. Currently it feels like you just have to keep exploring to find it which is a bit random and less skill based. It might be fun to explore giving the player more options to see like shooting out a ball of light or a brighter flashlight usage ability. Then you could explore having negatives to these effects. Such as attracting enemies when you use more light so you have to think about when to use it safely etc.
Nice job!