Cannibalism. A man makes a comment about if he should kill another man's wife and eat her, mentioning that other floors have become desperate and have begun to eat the women.
A man finds a torn human ear on the floor.
Frequent scenes of fights throughout the film (often involving multiple participants) with punching, kicking and weapons
A man punches another man repeatedly in the head.
A man is beaten by a group of other men and has a lot of blood on his head and torso during subsequent scenes.
A man drags a woman to a bedroom as she screams, and it is strongly implied that he rapes her although we don't see this. In a subsequent scene she has a black eye and cuts to her face.
A man jumps from the high rise and his fall is shown in slow motion. We see him impacting a car head first- shown in slow motion - and blood coming from his nose and mouth. Later we see the damaged car after the body has been removed, with large amounts of blood on it.
A group of men attempt to throw a man off a high balcony.
A man threatens a group of people with a gun, and shoots one of them although this is not very intense compared to the earlier bloody fights.
In a visually-distorted scene, a man is repeatedly stabbed.
We see the body of a drowned dog, another dog with blood on it after a beating, and a dog's paw being roasted on a spit.
People discuss killing a horse to eat it and a man approaches the horse with a knife. We don't see it being killed but we see it being eaten later.
A man slaps his wife.
Dead bodies are shown, some with bloody injuries
In a medical setting, a human head is dissected. We see the face/flesh being pulled away from the tissue/muscle/eyes underneath, and then a hammer-like tool is used to prepare to open the skull.