Cleavage

Male full frontal nudity for several seconds.

Girl starts to perform oral sex on man in restaurant, strongly implied by movement - nothing explicit is seen though

Couple having sex up against a wall in morgue - no nudity, you see thrusting for several seconds

Glimpse of girl's chest, wearing bra

Girl's bare buttocks

There are strong thematic elements and strong dialogue about sex and references.

There are many dead bodies at Martins work place

We see a gory body of the latest murder victim

Two hooligans grabs a bartender and punches another. Jens interferes, mocks the men, gets punched in the face and threatend by a broken beer bottle

Kalinka grabs Martin by the feet when he's in the bathtub and he nearly drowns

A woman is stabbed several times by the murderer. We hear it and see the bloody results. He then scalps her (offscreen)

Martin knocks down a man with the baseball bat

The murderer kills a man by cracking his head open with a baseball bat (we see a large pool of blood around the victim)

Original language is Danish, in English subtitles the translation has strong language all throughout, including F words, and B words, other strong language as well as mild one.

There is drinking and smoking, but they are not dwelt upon, and it is not a theme in the movie.

The second half of the film is very atmospheric in its suspense and terror depiction, the setting (a morgue) making it even more eerie. The film is quite disturbing, definitely not for people sensitive towards violence.