Go Down the Mountain and Become a Master of Subduing Demons

After twenty years of seclusion, I came down from the mountain, armed with invincible martial arts, to kill zombies, slay demons, and subjugate all races in the abyss of doomsday! Others are struggling to survive in the apocalypse, but I am pushing forward forever! Subduing demons and descending from the mountain, using martial arts to become a saint, I am the only god in this doomsday! (High martial arts + doomsday + demon defeating + invincible flow, cool writing without swords, feel free to follow up)