Not bad.
It does create quite a sense of forboding evil, and the spindly instrument at about 1:11 was very eery. I didn't like the dischordant strings at 1:45 very much, I thought they were a bit too much. They could probably have been less dischordant while still achieving the same creepy result. The terrifying buildup from around 2:20 onwards was masterfully done however, I could feel myself getting more and more tense and paranoid as more strings piled on and the pitch rose. Very good at inspiring fear, well done!