Okay, not SF. Maybe fantasy if you take that word at its base meaning.
Whatever, I'm going to review Hanna anyway.
This could have been a good movie. At times it actually is a great movie. However, bad pacing and plot holes bring this one down.
Unfortunately for a 'thriller', this one starts out slow, without a hook, and continues in this rut for far too long. On its own, the opener wouldn't be such a bad movie. One I might not watch, but not bad. Does it fit where it is? Not so much.
Then the narrative finally switches and it seems that we get the movie that was advertised.
But the action is short lived. We then get a fish out of water story not unlike the movie Nell. Oh, there's also a bit of a lesbian romance.
Eventually the bad guys catch up with Hanna and there is a brief flash of excitement. Hanna totally outclasses these thugs, yet she opts to jump in the river rather than finish the bad guys off and rescue the family that has been helping her. The movie dishonestly leaves the fate of the family off camera. However, everyone else that encounters the bad guys meet gruesome ends and it is unlikely that the family would have escaped a similar end.
From here it's all downhill. The only gun seen (and used) belongs to the main antagonist which works quite well for her until Hanna remembers how to use it.
Ultimately this movie revels in a bleak, masochistic view of the world and offers little entertainment in return. I recommend last year's Kick-Ass over this movie.