This achievement is story related
and is unmissable
Upon completing the finale quest Whatsoever a Man Soweth...
, this achievement will unlock.
To begin this quest, you must have completed the previous main quests
:Evil's Soft First TouchesDead Man's PartyOpen SesameOpen Sesame: Witcher Seasonings
Open Sesame: Breaking and Entering
Open Sesame: The SafecrackerScenes From a Marriage
NOTE: I have linked each Hearts of Stone achievement that is tied to a main quest as all of them - apart from I'm Not Kissing That
- are missable.