Hmm well as far as YA adaptations go it's not that bad. It doesn't feel sanitized like some of the other slough of films that came in the post-Harry Potter YAsplosion of the mid 00's.
The acting and effects are very dodgy, but the story is more interesting than I expected and the movie has something of a unique look. It definitely peters out by the end.
Again, not great but I'd rather watch this than Eragon, Bridge to Terabithia, The Seeker, The Spiderwick Chronicles, Inkheart, Percy Jackson, Chronicles of Narnia, I am Number Four, The Host, City of Ember, The Mortal Instruments, Vampire Academy, Beautiful Creatures, Goose Bumps, The Fifth Wave, Miss Peregrine's Home for Peculiar Children, and the upcoming The Darkest Minds.