If not for the provoke skill of King Goliath, this wouldn't be so hard, to be honest. I have a few skills that can ignore defense but it's not worth it since King Goliath seems to be absorbing all the damage alone and if he ever gets damaged, Queen Glass proceeds to heal him. I may not be able to see their HP bar but seeing some of the healing effects from the undead, it is clear she is healing King Goliath.
The only thing I wanted to do for this run to finish smoothly is to kill Queen Glass before King Goliath. All of our attacks land on King Goliath so if that is the case, the way for us to proceed is to kill Queen Glass before going to King Goliath or we will be stuck in an endless loop. It would have been great if there are magic spells or attack skills that can disable or ignore provoke but there isn't anything like that at all.