Same problem as Darth where “the Archmage died but everyone was alive and I was unable to speak to Crusader Deborah to progress the story.” This was on my third attempt, the first two times the Archmage was stuck invulnerable after the cutscene with the Archmage attacking Crusader Deborah, it seemed incomplete, like the guy with the dog did not appear in the cutscene at all until the third attempt. Also agree this quest was not fun and I do not want to do it a fourth time….
Also if anyone figures out a workaround could they please post it here?