The End of the World Is Coming, but I Picked up a Mecha

[Apocalyptic Wasteland] + [Mecha Evolution] + [Refreshing Article] + [Hot Blood] + [Tatters Transformed into Magical Weapons] The original energy catastrophe caused global collapse, and the once prosperous world turned into a ruins infested with monsters. Li Fan, a social animal, unexpectedly picked up a mysterious mecha. When all the survivors laughed at him for driving a pile of "junk metal", no one knew that this mecha... Was alive! [Swallow F-level aberrant rats, repair the power core by 1%! [Swallow D-class aberrant creatures and unlock the weapon module: high-frequency cutting blade! [Swallow the A-level distortion king crystal core and unlock the form: Sky and Sky Overlord! From then on, the monster restricted area that everyone avoided became Li Fan's cafeteria; the resources for which the fortress city-state fought bloody battles were just the dessert for his mecha. They called me "Scavenger", "Mecha Maniac", and "Tin Can". But they will eventually crawl at my feet, calling my new name with fear and awe - The doomsday tyrant who controls the gods!