From the Start, I Returned to the Apocalypse. How Can This Make Me Stronger?

[Apocalypse + reborn + one heroine + decisive and ruthless + no saintly heroine]

A disaster changed the world order. A mysterious force caused countless creatures to mutate, turning them into a calamity that would destroy civilization...

In his previous life, Xu Fei was framed and killed. Just as his consciousness was about to fade away, he was reborn.

What? I have to kill monsters to level up, but you can get stronger just by being struck by lightning?

Cannon Fodder A: “Damn, that works too? Is there no justice in this world?”

Xu Fei: “You’ll have to ask the King of Hell!”