I thought the movie was good. I enjoyed it. The only problem I had was how quickly they would get rid of characters. They introduced the antagonists (the cult) in the last 30 minutes of the movie and then killed them all off wayyy to quickly. Then all of a sudden the main protagonist, Ally, was texting her friend on her iPad about a refuge he found and then the very next scene they were together and then the movie just ended.
In the long run, if the movie was longer and the characters had more depth to them then it would have been 100% a better movie.