I think you made a great job on this one, you used all environments. Though, every level could need some more effort spent into it. Most of the time i ran around tried to find another scripted event. I didnt get the "scary" feeling.. And i got lost sometimes. Try making the levels bigger. And dont be shy putting more lights on your maps. I know i'm not the best reviewer if you look on my previous Custom Stories. They are pretty rubbish. But i've got more experience now when im developing a third one. Well made Custom Stories are always the best!
Otherwise this was a cool CS! Nice work bro!