Production value is okay. But the idea over and over again people that are in a scary situation, being threatened by something shadow-like in a dark space doesn't try to turn on any lights or get to a place where there is light is just stupid. Over and over again, dark, dark, dark, even sometimes in daylight, the production is so dark. I can't think of anyone that doesn't go for lights when afraid in the dark, or at least try and fail to turn on the lights. Any other aspect of this film is over-shadowed by the lack of any common-sense reaction to horrific situations and as far as I'm concerned that is a fundamental necessity of horror: bad things happen even when people respond mostly reasonably or intelligently in a given situation.
