The Dawnguard Add-on for The Elder Scrolls V: Skyrim has 10 achievements.
Acquire 11 vampire perks
Complete "Kindred Judgment"
Learn all three words of Soul Tear
Use the special power of Auriel's Bow
Complete "Beyond Death"
Complete "Lost to the Ages"
Defeat a Legendary Dragon
Complete "Awakening"
Acquire 11 werewolf perks
Change your face