The The Shadows of the Hist Add-on for The Elder Scrolls Online has 6 achievements worth 220 gamerscore.
Defeat all mini-boss and boss enemies in Ruins of Mazzatun.
Defeat all mini-boss and boss enemies in Cradle of Shadows.
Defeat Tree-Minder Na-Kesh after first eliminating all other enemies in Ruins of Mazzatun.
Rescue all six of the Su-Zahleel Elders from the Ritual Chamber in Veteran Ruins of Mazzatun.
Defeat Velidreth in Veteran Cradle of Shadows without any party members dying in the catacombs.
Complete Veteran Cradle of Shadows and Veteran Ruins of Mazzatun.