We did it.
Did the first three for the Vault because our 12th raider was late, then the skip, so had to kill Nexus-King – that’s 4. And then Dimensius died on the 96th pull, last try of the evening, 1 minute before the usual end time, so last or second to last pull of the night – finally. Another AOTC bagged, took 4 months though. Luckily no one was missing (except the poor sod who stopped raiding due to a prolonged hospital visit) so we don’t have to rekill, and now it’s just clearing the achievements in Normal.
Then it’s only M+ until the end of the season, and I’m really happy I can cut down on weekly appointments in December, it’s packed enough every year.