People Are Cultivating Immortality, but They Get Low Martial Arts Achievement System

What kind of experience would it be like for a person who is cultivating immortality but obtains a low martial arts achievement system? As long as you unlock the achievement, you can obtain the corresponding passive or ability. As the host of this system, Russell has extremely real feelings. "Host, it has been detected that your strength has reached the limit of the low-level martial arts world. That's awesome! The reward achievement is [Peak of Mortal Martial Arts]!" Achievement effects: Combat power increased by an additional 50%, defense power increased by an additional 50%, damage to opponents of the same realm increased by an additional 30%! "Oh, thank you." "Host, I have detected that you have broken a thousand-foot mountain rock with your bare hands! I will reward you with another achievement!" "Got it." "Host! The terrifying fluctuations of the peerless demon have been detected around you! The danger level is off the charts, run away quickly!" "Oh, that's my Ti Dao teacher. He's a nice person, but his emotional intelligence is a bit low." "Host! It was detected that you fought with a female devil for a whole day and night, and successfully forced the other party to beg for mercy. Unlock the achievement [Fierce Fight to Conquer the Devil]!" "Don't talk nonsense, that's my Taoist companion." Many years later, when the strongest bosses from other worlds tried their best but could not hurt Russell at all, they finally collapsed. "Where did you come from? How come you are more of a monster than me!" Russell sighed and shook his head. "Because I am full of passivity."