In the Apocalypse, I Ascended with Zombies and Machines

The apocalypse arrives, but Gou Bufa binds himself to a goofy System. He dances with zombie drillers in his left hand and repairs zombie coders with his right. While everyone else struggles to survive, he builds infrastructure, leading an absurd mech army as they tear down buildings and dance awkwardly. How did this mechanical ascension get so weird?