It is undeniable that this movie has its fair share of thrills, stunning CGI scenes and unique yet realistically gory zombies.
However, there is nothing more to that. It jumps from scene to scene without enough plot to give the audience a sufficient sense of appreciation as to why the characters are doing what they do. I could hardly believe it when the movie ended, 2 hours wasted on what could have been time playing "left 4 dead 2" and still leaving me with the same feeling - the 'that was thrilling but a complete waste of time' feeling.
I'm going to keep this a short and simple, almost lazy review. Because that is exactly how I feel about this movie.