So in Halo 3:odst bungie is going to put a vidmaster achievement called classic. apparently it's called that because it's similar to the Annual achievement, except IT'S GOING TO BE MUCH MORE IMPOSSIBLE!!!!!!! you have to complete a level on legendary, solo, no co-op, you need to be online, and you can'tfire a shot or throw a grenade. at least iron skull is not needed
another achievement is called Deja vu which is also like annuel. you must complete a level called highway on 4 player, xbox live, iron skull, legendary and can't use a vehicle(apparently the name suggest that the level is a level where vehicles apply)
this is just a warning to get you prepared for these impossible achievement
http://halo.wikia.com/wiki/Vidmaster_Challenges halo.wikia.com is your friend. it's the ultimate info for the halo universe. for halo nerds(like myself) who want to know more!!!!!!!!!
[Edited on 08.20.2009 8:23 PM PDT]