Do I Fight the Devil?

An accident allowed Zhao Tianlin to travel through time and enter the world of the large-scale MMORPG game "Grey Fantasy". The poor attributes in the personal panel and the "villager" profession that made people unable to complain made Zhao Tianlin couldn't help but curse. "Grandma is so stupid, how can I do this?" Soon, the game system responded to him. "[Mission Release: Defeat the Demon King]" Zhao Tianlin pointed to his nose: "Me?"