I was a beta tester of both Dawnguard and Dragonborn DLCs. I unlocked the achievements for both and Hearthfire as well. when i look at the main menu it shows 61 of 75 unlocked, but when i actually select Skyrim it shows 70 of 75 unlocked. I have deleted and re-downloaded all of the DLC and the problem still exists. I am missing 5 of the dawnguard achievements but i know for a fact I completed them. i guess my only option is to load up an old save and see if it kicks it into gear. Its very annoying not getting a 100% completion on it, when i know i did.