Wanjia Qingchu Jihua! Dang Yi Bian Jianglin Renjian

The apocalyptic prophecy came true: Earth has been transformed into a twisted survival game! All of humanity has been reduced to mere NPCs, helplessly slaughtered by alien players for sport. Just when the world falls into despair, he awakens a hidden class and gains the power to fight back against the players! Now, with Earth as the ultimate battleground, the war between NPCs and players officially begins... (Source: WebComics)