This is a really good one, honestly. The only thing Im a bit unsure about is the radar. I kept watching it very carefully, waiting to spot some hostile dots, but that never seemed to happen.
It might be interesting to add a cooldown between light uses and maybe make the radar something you have to “listen” to rather than constantly rely on visually. So you light up surroundings, remember and then have some "turns" to move, before the next light, while hostile creatures could follow you in darkness and you have to manage to remember the obstacles etc.