The Dragonborn Add-on for The Elder Scrolls V: Skyrim has 10 achievements.
Arrive on Solstheim
Craft an item out of Stalhrim
Complete "The Temple of Miraak"
Complete "The Path of Knowledge"
Complete "At the Summit of Apocrypha"
Learn all 3 words of Dragon Aspect
Learn the secrets of 5 Black Books
Tame and ride 5 dragons
Own a house in Raven Rock
Discover 30 locations on the island of Solstheim