The Drifting Classroom (1987)

A young boy gets out of the shower and walks across the kitchen completely naked. His bare buttocks is shown for a few seconds.

A teenage girl begins taking a shower. Her bare breasts can be seen for a few seconds, but any detail is obscured by the sand covering her body.

A man goes insane and threatens two girls with a knife.

A man accidentally scalds himself with boiling water. Half of his face is covered in burns.

Two boys try to fight off an insane man as he tries stabbing and slashing at them with a knife. One of the boys knocks him out with a baseball bat.

The school kids and teachers are attacked by a giant crab-like monstrosity. It impales some of them with its pincers.

Two boys have a violent fight to determime who will be the leader of the school kids. Both are bloodied and bruised in the aftermath.

A man is burnt alive onscreen.

Some mild swearing, PG-level words like 'ass'.

Despite being darkly comical half the time, the film has the protagonists being thrown from one morbid situation to another.

The protagonists find themselves in a hopeless state, while at the same time striving to overcome madness, wasteland monstrocities and other bizarre anomalies.

The ending is very bittersweet, yet tinged with some hope.