This version seems a lot harder than the previous ones. I would add more waypoints in the beginning since I couldn't get passed the bit with the staircase. Seems like you have to use the gun otherwise you die, but then there's no ammunition refill, at least I didn't see it. Hmm . I like the soundeffects, makes it creepier, and I see you've tried to make a good story with lots of characters interacting with each other again. Music was allright as well.