Cool game, it's very atmospheric and has a lot of potential.
I just have 2 suggestions:
- make the hitbox more accurate, sometimes the box didn't pass trough some areas with really enough space visible;
- when the box is stopped by something while you're still holding it, the character will continue to move, which sometimes lead him directly to the light. So if the character stopped with the box or the game gave some advice when this happens, the unfair error chance will reduce.