There is a POV shot up a woman's skirt, where we see she is wearing a black thong, and her buttocks are partially exposed.

A woman is seen topless for a brief second. You see her breasts. Not sexual

A man is found dead in full frontal nudity. You see his penis. Not sexual

A man's rear is shown while bathing

A man is mocked by being asked whether he is having an affair with a man or a woman

A woman receives amorous letters (we don't see her read them, just posting through the door)

Most of the violence is subtle.

A man is stabbed in the shoulder which penetrates his body and sticks into the floor. We see a lot of blood in a puddle on the floor. A woman uses a shoe to pound the knife in further. The most gruesome scene in the film

A man is stabbed through the neck. We see the knife stick through and blood pouring out. He leaves a large blood puddle on the floor

Two men are killed offscreen and their bodies fall through an attic door to the ground below.

A dead man's feet and hands are cut off and his teeth knocked out, offscreen (we later see the hands and feet in a small white bag covered in blood)

A man is tortured by having his head held underneath blood in a bathtub (he later drowns)

A woman is punched in the face

A man gets a small cut after being stabbed with a drill. Not graphic but we very little bloody detail on his forehead but doesn't pour out

A man is tortured by being stuck in a freezer while two men sit on top of it

Some intense fistfights

A man has both of his legs broken with a crow bar. Not graphic

"Fuck" is said around 11 times

Some little detail of smoking.

The torture scenes may be considered frightening

The genre change from black comedy to thriller is intense and the film has some disturbing scenes.