He's Hiding Behind the Fridge!
No, don't open the fridge door, don't open the fridge-----!!
This is a great throwback to horror soundtracks of previous decades, and your main theme (on cellos, I think) sounds like it belongs in some sort of Fugue from Hell -- how to describe it better?
How about: "Johann Sebastian Bach, if he scored 90's horror films."
Your orchestration is quite good -- to the point at which I would never have guessed that you primarily listened to metal -- and your violins are all over the place, which fits perfectly.
You have this massive build-up to 3:06, creating all this tension. Then it gets really quiet, relieving the tension: that's fine. But at the end, I feel like the track should continue to build up even more tension than the first time. That's my $.02, anyway.
Well that, and I think it needs more cowbell-- I mean, timpani :D