What to watch out for
Most of the negativity revolves around whether it was Hanna's destiny to be the kind of trained killer she is or whether her father had a choice and could have raised her in a more peaceful manner. Marissa is an unredeeming villain who values herself over everyone else.
Except for Hanna's grandmother, there are few positive role models here. Even Hanna's father has ulterior motives and brings her up to become a tool of vengeance. Sophie's parents seem loving, open-minded, and caring, but their concern is overshadowed by the selfishness and cruelty displayed by Marissa, who's a very cold-hearted villain.
From the opening scene -- when Hanna hunts down a large elk with an arrow and finishes it off with a bullet -- to the final moment, when two characters face off, there's barely a scene in the movie without some form of violence. Hanna's father trains her by sparring hand-to-hand and with various weapons. Major and secondary characters are killed in various ways -- bullets to the head or heart, slit throats, arrows to the heart, smashed skulls, knives to the gut, snapped necks, and more. Unlike superhero movies, the violence is realistic and at times quite bloody. Innocent bystanders who've met or spoken to Hanna end up tortured or killed.
Hanna and Sophie flirt with and then go on a date with two attractive guys. Sophie and her date kiss, but violence gets in the way of Hanna kissing hers. Sophie's parents have loud, camper-van-shaking sex; viewers hear them moaning while Sophie comments about them being "like rabbits." A woman practices a dance at a club, and the owner tells someone she has male and female genitalia, but nothing is shown.
One loud "f--k," plus a few uses of "s--t," "d--n," "oh my God," and English slang like "mental" and "bugger."
There's a close-up of Marissa's green Prada shoes. Villains drive in a white Range Rover.