The more I think about it, there is NO SHOT the writers are satisfied with her story at the moment.
For instance; you could, hypothetically, enter Act 3, head directly to Gortash, kill him within the first 15 minutes of the final act, get Karlachs monologue and the quest log will say "We tried everything we could" BEFORE YOU EVEN ENTER THE CITY.
Larian would have to be full, top to bottom, of the most incompetent game developers possible for them to think that is ok.
This is what I did, not that quickly though. It made the tone of her story really weird and inconsistent, though I think it'd feel that way regardless.
Originally Posted by Chlamydia
It's not "the gang goes to Avernus" though. It's Karlach and Wyll (if you made specific choices in his story) go to Avernus, and Tav, but only if Tav romanced Karlach.
That ending is also not available if you are playing Karlach as an origin character (you can't take anyone with you to Avernus in that scenario).
This ending was kind of ridiculous also because shortly before it, you can convince Lae'Zel to stay with you, then after she agrees immediately ditch her and go to Avernus. Lol.
