A darkling plain (Mortal Engines #4)

Not applicable to this literary work.

Multiple important characters die or face lethal danger, with grief and loss carrying emotional weight.

Injuries are described, but the focus is more on the scale of destruction than graphic viscera.

Mild profanity and harsh language used in moments of extreme stress or anger.

Background characters or minor elements of gender expression exist in the wider world-building.

Religious or pseudo-religious ideas may appear in the background, but organized faith is not a major focus of the story.

Focuses on the complex, evolving relationship between the leads; includes emotional attachment.

Characters face dangerous machines, pursuit, imprisonment, war, and threatening environments, creating sustained tension.

Occasional references to alcohol consumption in social settings.

War, combat, attacks, executions, and threats occur repeatedly; violence is serious rather than purely cartoonish.