Doomsday: I Obtained the Hunting System

Beneath a dark red sky, zombies swarmed in endless waves, while powerful mutated monsters rampaged. A flash of blue streaked across the sky, followed by a terrifying, dazzling blue beam. The mutated monster's roar abruptly cut off as it was sliced in two. The great cataclysm struck without warning. Countless creatures were infected, mutated, and driven insane, turning into monsters, while the survivors evolved and gained abilities. The protagonist, Zhou Xingran, acquired the Hunting System: he could grow stronger simply by hunting. [System + Apocalypse + Evolution + Survival + No Saintly Protagonist]