This film was definitely not unique, or special, or inventive. It was, basically, a monster movie.
It did, however, get the job done well. There was also a definite atmosphere, or 'feel', throughout the movie that did help.
I took the moral of this movie as, when you're deep in the woods, or what's left of them, and you hear loud strange noises, don't go deeper in to figure out what it is. Just high tail it out of there.
At the end of the day, this isn't a movie I'd go out of my way to see. However, I didn't feel like I wasted my time watching it either.