The The Dark Brotherhood Add-on for The Elder Scrolls Online: Tamriel Unlimited has 6 achievements worth 220 gamerscore.
Complete quests, defeat bosses, and explore delves to become the Bane of the Gold Coast.
Join the Dark Brotherhood and complete the "Voices in the Dark" quest.
Complete the "Filling the Void" Dark Brotherhood quest in the Gold Coast.
Execute all targets listed in the Litany of Blood and collect your reward.
Complete each achievement associated with the Speaker's Black Sacrament contracts.
Aid each of the notable figures recently arrived on the Gold Coast.