Please note the following:This contains spoilers
The Forgotten Sanctum is end game content, so adventure at your own peril!
To start The Forgotten Sanctum DLC for Pillars of Eternity II:
• Ensure you have the DLC installed and it displays as installed on the Main Menu.
• In order to start the DLC, you must have either completed Magran's Teeth or Mapping the Archipelago: Tikawara.
• If you have done so, you will encounter an earthquake event that will allow the DLC to be accessed.
• Sail to the Hall of the Unseen located on an uncharted island directly south of Tikawara.
• Venture inside the Halls of the Unseen, make your way to the center, and go down the stairs to start the DLC.
The above steps are when it is possible - but not recommended - to start the DLC. Instead, to ensure you are around the appropriate power level, there is an additional event that can fire:
• Make sure the earthquake has occurred due to completing either Magran's Teeth or Mapping the Archipelago: Tikawara.
• You must be ready to journey to the end of the game to Ukaizo. This is either by decking your ship out with the blackwood hull and dragonwing sails, or by allying with one of the four major factions.
• Sail on the world map for 12-24 hours in game time. This will trigger an encounter where Llengrath lands on your ship to speak to you. This will start the first quest of the Forgotten Sanctum DLC.
• Sail to the Hall of the Unseen located on an uncharted island directly south of Tikawara.
• Venture inside the Halls of the Unseen, make your way to the center, and go down the stairs to start the DLC.
