This achievement is more extensive than the others, because it involves additional actions upon recruiting Anomen:
- Keep the party's reputation level above 16.
- Complete the quest "Anomen Returns Home After his Sister's Death", by having Anomen seek justice not revenge.
Bring Anomen to the Order of the Radiant Heart - roughly around 10 in-game days after his quest is completed - and the achievement will unlock if both conditions above are met.