Edit: Update is live! Confirmed fixed.
Guide:
Say this stuff to Dante when you see him.
Dante! What are you doing back in town?
Damn your tastes are weird
I bet your family didn’t see that coming
(Say whatever you want in the convo with Sam. Upon completion, achievement unlocked!)
Old info:
Currently unobtainable. I spoke with Carol from Whitehorn Digital and got confirmation this will be fixed in the next patch. ETA 1 week. Carol also said she would give me an update when she gets a hard date for the patch and I’ll be sure to update it here.