The Markarth Add-on for The Elder Scrolls Online: Tamriel Unlimited has 4 achievements worth 170 gamerscore.
Complete quests, defeat bosses, and explore delves to become the Savior of The Reach.
Complete the "Second Chances" quest in The Reach.
Defeat all challengers in Vateshran Hollows.
Conquer all challengers in Veteran Vateshran's Hollow.