Your Endure wasn't a great run. When I did it we had over 2 mill. Also, sometimes Endure doesn't show up when you leave some enemies alive that are hiding. When it says set 5 and a drone or grunt is still back by the rockets then you have to kill it by the 1st wave or Endure sometimes doesn't work.
Also Bungie will not send you the achievement no matter how much proof you have. this happend to another guy a while back and he was denied and waiting and sending messages to bungie, but they simply wouldn't listen. The best thing you can do is go to the classifieds or odst forum and ask 4 help
In Deja Vu did you put iron on
[Edited on 07.02.2010 11:55 AM PDT]