Casting was poor.
The 2nd in-line detective was a horrible casting choice. Doing something as simple as making the actor more realistic and the character more down to earth would have gone miles as to making the film better. Also taking advantage of actor Noah Segan would have been a wiser choice, as he only makes it through half the movie and has already become a veteran of horror movies.
This film directly as a result of the director. Yes, the premise is weak but that has never stopped a horror movie of rom getting decent reviews. The most basic script can go a long way in a horror scenario, whatever shortcomings this film goes through are the directors fault...