I like the concept and the graphics. The map felt a bit big and empty. Prob. adding some more environment stuff or making the map smaller would have been nice.

The graphics and audio/music are great. In my opinion when you lose the flashlight it kinda leaves you wandering making it impossible to continue the game. I do believe that is necessary to put a map or a guide.

Maybe a cool idea is to add that the light dimmers as you lose batteries to it, in that way it indicates how much power you have left, instead of just blackout.

I like the idea, however... 

The map seemed very large and there was no indication of how much power I had left in my flashlight, so I felt like I didn't have enough information to decide how much to use the flashlight or where I should go to look for the keys.

Movement felt nice. Audio was great! I liked the little lightning flashes.