It's good for a couple hours. That's the only downside, the upgrades are effective and playstyles optional. It lets you quit a run early before it gets too dark (an option I did take on some occasions lol). If you're not confident in avoiding being lost in a semi large foggy square, that's the only weird difficult part. If you ever thought for slenderman with a skill tree without it being too serious or pretentions, try it.