I like the theme/setting/story. The light mechanic is a lot vague. If these are "regular" flashlights, then batteries for continuous use would last maybe two days, or if on LED, seven at most. That's 24-hour use. Even if taken in shifts, calculating the percentage is tricky. If it were a self-recharging flashlight (i.e. had a built in dynamo) then one could make a 24-hour arrangement before useful light is gone. Yeah, the balance between describing the game flavor (actually important to the players) versus filling in the mechanics gaps (also important) came a little short on this one. I'd like to see a revised version soon after voting is done.