I Have Already Reached the Max Level Before Goldfinger Comes?

Nan Shu lived in a world where monsters were rampant for two hundred years. From a rookie who was chased by zombies and chewed his trouser legs, to a full-level boss who flattened the cracks in the abyss with one sword, he relied on his strong bones and a hundred million bits of luck. Now that the tide of alien beasts has receded, the ruins of civilization have been rebuilt, and even the snot-nosed kid who chased him and shouted "Brother, help me" has become the commander-in-chief of the base. And Nan Shu is sitting on the floating island on top of the world, drinking wolfberry—— It's time to retire. Until there was a "ding" in his mind: [The savior development system is successfully bound! Novice mission released: Go to 'Chenxi Subway Station Exit A' and defeat the Corruptor Herith (0/1)] Nan Shu's hand shook and the teapot shattered to the ground. This broken system is two hundred years late... And let him go to fight the Corruptors in a place that had long been bombed into a radiation crater? ! The system broadcasts both emotional and emotional content "Dear host! Defeat the Corruptor Heris to unlock and start the main mission~" "The gift package contains: 3 healing bandages, 1 compressed biscuit, and 1 mineral water!" Nan Shu: "The dragon meat stored in my warehouse is almost moldy." System: "... T^T" Nan Shu: "Also! Herres, Herres... Relying on my superb memory, this guy should be a level two corrupter, right?" System: "Hmm~" Nan Shu smiled coldly: "The lifespan of a second-level corruptor is ten years." Intention: Many things will have completely different ideas when reopened from different standpoints