bystill trying to decide if this requires 1) fighting the ancient dragon in DS2 2) going back and fighting a few legacy dungeon bosses in ER I skipped.
but I AM through most bosses in DS2, am working through the DLC, have done everything else, and have gotten every boss in Sekiro, ER (minus above caveat), Bloodborne, and DS1. so great progress, can probably finish All From Soulses by end of the year.