This quest is the stupidest thing ever.
I get to the part about 'Defeat the Ancient Warriors'. For starters, like, fourteen of them jump me at the same time. With my Ultimate up I can usually manage it, BARELY - without it I'm down in seconds flat. They don't go for the Montclaires, they just all bumrush ME specifically and I'm down.
On the RARE occasion I actually manage to outlast the horde of bad guys, the quest promptly bugs and the Montclaires will not advance, just standing there staring intently at the scenery, as though the quest is surprised I managed to survive and thus had to come up with another way to say 'screw you' on the spot.
I've tried relogging, fully exiting and going back, leaving the room and reentering, leaving the whole AREA and reentering, and even abandoning the quest and starting over. Same crap every. Single. Time.
FIX, please?