What does Dawnguard add?

Related questions

1. Should I become a vampire lord?
2. Is it better to join the Stormcloaks or Imperials?
3. Where are the 9 holds in Skyrim?
4. Is Dragonborn or dawnguard better?
5. How many holds Does Skyrim have?
6. Is Elder Scrolls 6 in Elsweyr?
7. Can you be king in Skyrim?
8. Do the Stormcloaks or Imperials win?
9. Is the Black Star still a Daedric artifact?
10. Do you get your dragon souls back from Miraak?

Tags

1. #vampires
2. #thwarting
3. #permanently
4. #hunting
5. #intends
6. #schemes
7. #revolves
8. #organization
9. #around
10. #scroll
11. #official
12. #dawnguard
13. #major
14. #elder
15. #first
16. #dedicated
17. #harkon
18. #ancient
19. #skyrim