Level Up with Skills

In a world wavering on obliteration, humankind's just expectation is becoming more grounded in a secretive pinnacle offering four modes: simple, ordinary, hard, and the merciless "alone mode." Kang Taesan, notwithstanding picking the simple course, turns into the most talented player after vanquishing the pinnacle. In any case, as Judgment day approaches, he understands that he isn't sufficiently able to save Earth and goes back in time, embracing "alone mode" to step up much more. With another opportunity, could he at any point store up sufficient ability to forestall the apocalypse?