This Achievement is story relatable and can't be missed.
unlike other story achievements in the game this mission (attack of Clones) is required to play to stop you from having a standard notoriety and get attacked by random AI's. Once this mission unlocks I recommend you to immediately knock this of the list to prevent the AI from messing with your business.
*** Spoiler - click to reveal ***The achievement unlocks after you the defeated the Saints Row 1 clone followed up by the Saints Row 2 co-op clones. You just need to throw them in the portal once you've damaged them enough.