There is only a scene of a naked woman, but without any obvious nudity in the scene (the scene varies depending on the version of the film)

A woman is seen completely naked hung up by chains. (not in all versions)

Kathy Jordan, fully nude, is bound by chains. Donny Kohler douses her in gasoline and then sets her on fire with a flame thrower. Her burned corpse is shown after. It's a very brutal and disturbing scene.

Many people are burnt to death, some offscreen.

In a dream, a man is dragged away by burnt victims.

As a child, a man was burnt on the wrists by his mother.

A woman violently slaps a young boy several times. Mainly shown from the child's point of view but very disturbing due to the suddenness and viciousness of the assault.

Not much.

A man attends a party. Stereotypical alcohol in take.

The whole movie is very suspenseful. It has a surreal feeling and eerie booming music.

The final scene is incredibly frightening and disturbing.