Pejo
Member
I can't remember all of the things that gave me that achievement. I wasn't using guides so I just kept spamming the stories until I ran out and got it. Did you do the whole mushroom questline? The two Fatui questlines? 9 orbs?I forgot those were a thing. I was missing one - got it now, thanks.
Unfortunately, that doesn't count toward Taliesin's achi.
I also just yesterday got an achievement from the Sumeru researcher guide which came with a recommendation letter. Seems like it's going to have something to do with future quests in Sumeru.