I think it is DEFINATELY horror worthy. The death scenes are gratituous and a business dude walked in to my office while I was watching it, got caught up in it and then lept back and said "'Oh Shit!"
Total recommend. Not the best ever, Descent is rocking A grade- Mindhunters . . . B+
Great death scenes!
For me i really enjoyed the movie, personally it was the best horror/mystery/suspence i've seen this year that i've rented, maybe over the top in some of your views but for me this film now sits proudly in my DVD collection i'd advise anyone to go rent this as it's well worth it.
Some of the roles Val and Slater weren't great but at the end of the day the storyline and suspence of who was doing it was great.