None.

A cat is attacked and killed by a giant rat. The killing happens offscreen, but the cat's bloody corpse is briefly seen later.

A man is shown bleeding from a head wound and his mouth after a violent car crash with blood on his face.

A man is stabbed to death with a knife, very bloody.

A man is shot to death, some blood is seen on his clothes.

Very little, if any. Not enough for an R rating.

A woman who chain smokes is seen smoking while holding a child, and goes late at night to get a carton of cigarettes.

There are a few frightening and eerie scenes throughout, as this is a horror movie.