Good story, to the effects there is little to complain about and is a lot of tension in it.
I liked the whole characters and twists and the way the film was shot (no trip around the world as World War Z, but in an oppressive skyscraper).
No 5, because it is not as good. Slightly more detailed work would have the film done well (but this has probably not given away the budget that would have become really expensive namely).
Who Sci-Fi like and do not expect a whole new story to get (is now really hard) should look at him. Fortunately with little Patos and "Hero-Style"!