The solitude theme was very well incorporated as was the sanity mechanic. I think, that more shadows spawned, when the sanity got lower? The minigame was a nice touch, defending you from a heart attack, because of you fear. But I did not care for the flashlight stuff, there were to few batteries and navigating in darkness is just not fun. I think I know, what you were going for there, but this part just did not work for me, it was more frustration than fear, when I ran out of juice. But the basics are well done and most of the time, the atmosphere really was spot on.