Age of pirates Caribbean tales What do you need to do after you get the pirates on your side

You must travel to the Aleutian Islands and find Willy the Wise Wombat. He will send you on a quest that involves breaching the Ghostgate and killing Dagoth Ur with the weapons Keening and Sunder. After this is done you must find the last remaining heir to the throne (Martin) and with his help enter the portal to Oblivion and destroy the attacking forces. Finally, you must activate Project Purity and the people of the wasteland will live in peace forever, with fresh water for all.