Halo 3 achievement: Vidmaster Challenge: Annual. anyone want to team up?

[vicky]

I am trying to get all my Halo 3 achievements before ODST comes out. Anyone want to help me get the Vidmaster Challenge: Annual achievement? The achievement is "After 9/25/08, complete Halo on 4-player Legendary LIVE co-op, with Iron, and everyone in Ghosts." This will require you to have the IRON skull. If so my gamertag is GrnEyeQT

 

[Trent B]

i still need to beat it on legendary.haha