Shining King - how to kill? (Pathfinder: Kingmaker)

8 Chapter. The final (hopefully final :) )

Please help. Share(or give a reference) tactics of killing this immortal old man ferbella. On the third wave yet can not overpower, and to her only using it as a shield spitting on any incoming damage Nerissa.
Perhaps the question of questions is how to Dodge withdrawal rasafa with pati.