I really like the game style! Although if you are going for a horror feeling I would probably suggest adding more contrast to the picture by making the ground darker and adding highlights to the characters.
The gameplay idea is interesting, although I think the light shrinks a little to slow, so itās not about hiding your light near enemies, but instead carefully moving to not get them in your light radius. Making it move faster, or adding ability to both grow the light for visibility and shrink it to hide would improve the fame feel. On that note I would suggest checking out how the light works in Outer Wilds DLC, I think itās done incredible there and may give you some ideas for improvement.
Overall, it is a pretty enjoyable game, and you rarely see horror games in game jams. Good job!