The achievements "Awakening" and "Legend" did not unlock after I completed them.. I have done two playthroughs and killed several legendary dragons and still no achievement :'(

I also had "Awakening" not unlock for me, in addition to "Kindred Judgement" and "Beyond Death". I have gone all the way through the Dawnguard quest line with 2 different characters ( vampire and dawnguard sides).

I have the slim black 360 model with the 250 GB hard drive. Characters are level 53 (Bosmer vamp) and 49 (Redguard). Thanks!

EDIT: If it matters, I have Hearthfire dlc as well.