Activities
Dark Citadel
A weekly co-op dungeon for two to four players.
Unlocking it
The Citadel needs Vessel of Hatred and a level 70 character. Take the quest from Priestess Cualli in Kurast once, and every character on the account can enter. The entrance is by the Rise of Khazra waypoint in Nahantu.
How it works
It cannot be run alone: you need at least two players, and four is recommended because the difficulty does not scale down. There are three wings, each with two bosses, and you can return to town between wings.
Rewards
Your first full clear each week gives a Weekly Rewards Cache. Runs also pay Citadel Coins, spent at the Citadel vendor.