Never, ever doubt Common Sense Media's advice on the violence on this one, where the story is the second in the Marvel Cinematic Universe after IRON MAN, the third one being IRON MAN 2, is a (sort-of) sequel to Ang Lee's 2003 "hamburger promotion" Hulk: (although Lee's Life of Pi was MUCH better by a long shot), Bruce Banner is in exile in Brazil, but then, a drop of blood plops into a cup of juice, which is then used for mysterious purposes. However, trying to control the Hulk (Jennifer Connelly was better than Liv Tyler as Betty Ross), he still tries to rescue that woman he (or the Hulk) loves: Betty Ross, daughter of General Ross. But when Emile Blonsky, another mysterious scientist, receives this DNA, he's ready to fight.
Intense action violence is definite in this film: a super-being gets brutally shot at and gassed out on a bridge, a super-being throws someone into a three, a man is pinned against a caged wall and beaten up, while his dog is tranquillised, the Hulk is POINTLESSLY shot at, a super-being breaks a bone off of another super-being (very brutal) and stabs him with it, while being repeatedly punched and pummelled, and that's a heck of a lot of violence.
Betty screams "A**HOLE!" at a taxi driver, but CSM missed out that a scientist is asked how he feels and then says "P*ssed off and ready for round three." Men are seen shirtless in the movie, and there's a sex scene between Betty and Bruce, but Bruce doesn't want to "get too (sexually) excited." Only some language, which is NOTHING compared to the violence - biological and messy - and at the start, the Hulk leaves a scientist seriously, severely bloodied.
Talk of battle is heard in some parts of the film, and this is MUCH better than Ang Lee's by a long shot, except that Lee's one had the tactic of using split-screen to emphasise the action, but was lacking with the (mostly) bad acting and (slightly) over-long length. Though not as violent as this one. This one has good acting (even Ty Burrell of Modern Family fame's in it!), 12 minutes less/shy than 2 hours, and if you thought Lee's was bad, the animated direct-to-DVD, extremely violent PLANET HULK, which I've also reviewed, was badder than Lee's. Though this one is better than the both of them.
Two characters smoke, and there's a nice cameo (I won't reveal who it is, it's just before the credits.) Edward Norton's interpretation of Bruce Banner is quite convincing, though he doesn't have to face a sharp needle going near his eye, only worse. PG-13 has really stretched for violence these days. However, I could think of more violent PG-13s (The Lord of the Rings: the Fellowship of the Ring, the first 2 Hobbits, the Hunger Games, the Wolverine, probably more.)
A little bit of drinking, and even *I* found the violence REALLY intense. It's a good movie overall, but incredibly violent and intensely scary. Anyway, thankyou for reading.