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