returning to the fires of Avernus with either Tav or Wyll (or both, in many of our head-canons)
My wife and I just finished our first playthrough and got this ending with both. Did they add that in one of the patches?
I saved every scrap of infernal iron in the hopes (with the expectation, honestly) that they would be used in act 3 to fix her engine. After meeting Dammon and finding out he was all but useless now (save for a special
surprise), I still held hope the Gondians or something with the Steel Watchers would happen, so I kept saving every scrap. I destroyed countless Steel Watchers for it.
Then, in the end, nothing. Fuck all for nothing. I'm glad she agrees to live (particularly after that gut wrenching speech at the end) and we get to go with her, but now I just want a Karlach expansion where we go through Avernus and fuck shit up.
On a tangentially related note: Make sure Wyll is wearing something before the final fight, even if you're not taking him, unless you want all the emotion of the final scenes ruined by his tighty-whiteys. Didn't think much of it when I gave his gear to Gale, but he's just in the background practically naked the whole time and walking into Avernus with his ass cheeks out. lol