The Eternaut 1969 by H. G. Oesterheld

In a chilling near-future Buenos Aires, an ordinary snowfall proves to be a lethal, engineered weapon that wipes out much of the population, forcing a small band of survivors led by Juan Salvo to seal themselves in a house, don improvised protective suits and wage a desperate guerrilla struggle against mysterious invaders and collaborating forces. As they endure hunger, betrayals and encounters with bizarre machines and creatures, the narrator records the group's courage and losses, crafting a tense, claustrophobic chronicle that becomes a broader, allegorical meditation on resistance, solidarity and the costs of survival—ending in a disorienting twist that sends the protagonist beyond the bounds of time.

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