Simple and fun, I'm impressed with all the mechanics involving the "light left system". Remind me Adventure from Atari 2600. Awesome!

I  really started to panic when i had almost no light left. Great game.

Interesting concept I liked the fact that the less light you have the closer you are to lose and the hardest it is to survive because of the visibility. Maybe you could add some more elements to make the game more dynamic, like more objects or enemies, but the game is pretty good as it is.