I Know Every Zombie's Weakness

He wakes inside a zombie game surrounded by the undead—but he already knows every monster’s weakness and where every legendary weapon is hidden. Using his knowledge, he fights his way from certain death to unstoppable power. Then he discovers the horrifying truth: this is no game. The apocalypse is real, and the man controlling it has been watching him all along. To save the world, he must turn the final battle against its creator.