Someone suggest if everyone with addiction died or if you start with a group with no addiction then it'll be awarded. It isn't a "bug" per say, but it do seems like the actual situation doesn't fit the description of the achievement.
Is this the real case? Sorry I can't confirm it because I already had the achievement.
Also, just trying to slip in another quick question, is any of the achievement bugged(like indulgence" on launch) currently? A few of them seems very hard to discover.