Okay so the story does start off interesting enough (Cowardly kid with a crazy past) and the premise is actually quite interesting as well as the story (not quite "Zombies" but something else) The problem is that they didn't use the budget well enough. Sure the effects are pretty good but there's occasionally some bad camera styling (it's enough to be noticeable) and the music and sound effects are very much below average. It's a shame who they got for the lead role because you can clearly see his lack experience, yet his fellow actors actually do quite a decent job. It does get a lot more interesting near the end of the movie but it doesn't give itself enough time to explore the possibilities well enough.
So in conclusion: If you enjoy cheesy zombie movies/ Creature movies then you may like this. If you don't mind the low-budget feeling horror flicks then you may enjoy it. If you're someone that only enjoys top-end effects and amazing acting then I don't recommend this movie for you.
It's a lot better than some of the horror-zombie-creature flicks as of late but it isn't genre defining, nor is it anything new. I gave it a slightly above average score solely for it trying to do something different. It may not have succeeded in doing something different but at least they tried and that's more than can be said for most movies these days.