Mutated Apocalypse: I Use Immortal Martial Arts to Blow up the Heavens

The world is suddenly hit by a radiation disaster at the end of the world, and zombies are rampant. The protagonist accidentally fuses the black flames of the system, wears an alloy armor, pushes back the zombie tide, smashes the conspiracy of alien species from outside the territory, blows up the sky with his own power, and sweeps the world of the end of the world with the immortal martial arts mecha!