Zombie's Doom? “Chronicles of Jack Doom”

The saga of Jack Doom; an ex-marine combat veteran turned into a zombie killing sociopath by the mental stress put on him by a plague of the undead that is ravaging the entire planet. Now obsessed with tracking down an old friend that had abandoned him and his family when they needed him most, leaving them to die a grisly death at the hands of the famished zombie hordes, as well as another surprising source of unfathomable horror, Jack treks into another world consisting of vice, violence, and debauchery as he trails his adversary north.
As Jack sees it, only fate saved him and his family from a gruesome demise, which was only postponed for a short time thanks to the betrayal by his old friend, and now he does not hesitate to do what he feels is necessary to survive in the zombie-plagued landscape and accomplish his self-imposed mission of revenge, no matter who has to die in the process. After joining up with a devil-may-care psychopath named Derek, and reuniting with a former zombie fighting partner and her morally dubious friend, they all head into a hellish land teaming with the hungry undead and a population of brutally vicious homicidal maniacs in search of Jack's ex-partner and now sworn archenemy.
However, their real mission is still unknown to the unsuspecting motley group, but to their dismay, it will soon be revealed to them in a most unorthodox and heinous manner.