I have completed every book quest, renovated every book shop and bought every book they have. I've also gone back to Cappadocia by replaying memory 7-2 and bought all the books there.
I still don't have the "Sage" achievement – the description is Collect all available books so it seems like I should.
Am I missing something? If so then what?
Is this achievement broken? If so then is there any way to fix it?
It seems odd that a triple-A title like AC:R would have a bug that makes it impossible to complete it.
Best Answer
The Sage trophy/achievement was apparently broken in update 1.02, see later comments here and this forum post.
There are currently no workaround aside from deleting the game data and trying to trigger the trophy again, either by loading a save where you don't have all the books and collecting them all or by attempting this on a fresh save. Hopefully a patch will be available soon which will fix this.