Reborn: 1000x Damage

Past life hero, betrayed by brother and girlfriend, died with hatred! Aiden Ford is reborn before the apocalypse, awakens a system! System identifies him as a 'demon,' granting 1000x critical damage bonus! He goes completely dark! Betraying exes, apocalypse terror—he'll crush them all. Aiden will use his 1000x combat power to steamroll everything, becoming a God of War!