Curse MUBI's integer star rating system: "Hanna" is better than average but not quite rich enough to merit a whole 4th star. Young Ronan comes across as extraordinarily centred; if I had a teen daughter, I would rather have her go see this than "The Prom" or "Twilight". There's a touch of Grimm's fairy tale to it that is a propos and enchanting. And The Chemical Brothers score is worth a listen on its own.
A script so structurally unsound, I wouldn't build it in an earthquake zone. Stylistically interesting, wonderful use of sound and music with radiant cinematography and left-over production design from "The Book of Eli." After "The Lovely Bones" and this, Saoirse Ronan needs to find a director on her level. She is just too good to waste like this.
The direction and editing as well as the cinematography are pure brilliance and manage to exert a strong fascination over the viewer despite some disappointing plot developments. The kind of film that leaves you with an uncertain feeling once it ends, and you can't really say if it's a good thing or not. Still intriguing and audacious.