The Guurok is the toughest mob in the Queen's Colony. He can be found as an NPC sitting at his spawn location. You will need to collect six pirate skulls that are dropped by the skeletons on the island (a fallen pirate, A fallen brigand, A fallen assassin) and drop them on the big rock on the middle of the stream, beside The Guurok. An in-game message will appear in your chat window if you have skulls in your inventory: "The Guurok lets out a hiss, almost as if it smells you. As you place the skulls yt will gradually get larger and eventually become attackable.