Instructions
Engage the Goblin King in combat and have your entire group focus on attacking him.
Switch the group's focus to the totem located next to the Goblin King when he begins to glow green. You must destroy the totem in six seconds or less or the Goblin King will heal to full.
Focus all of your attacks back onto the Goblin King the moment the totem is destroyed. Continue to attack the Goblin King until he is dead.