Rise of the Commoner: Godslayer

In the ancient Nine Provinces, the Heavenly Dao seals fortune, and commoners can never rise above their station. On the brink of death, Liu Chen is reborn and awakens the Karma Creation System: slay the wicked to gather karma, replicate the talents and memories of fallen foes, and even recruit legendary generals from the Three Kingdoms to fight by his side! Starting from the depths of the slums, he rises from a low-ranking guard in the Brocade Guard, maneuvering through noble clans and sects, stirring the winds of the Five Domains. When the sinister plot of the outer gods to harvest all realms comes to light—birth is never destiny! A mere commoner, defying the heavens, wielding his blade to slay gods! — Description from novelcodex.org