To get the formerly employee exclusive Recon armor for use in Halo 3 requires earning all 7 Vidmaster achievements, in no particular order. The easiest one is 7 on the 7th, which requires entering into any Halo 3 online playlist on the 7th day of the month with 7 exp in that playlist. Lightswitch is also obtained online by getting to Lieutenant in any playlist (50 exp) and can be completed
. quickest on any double exp weekend playlist. For Annual, finish the last level of the campaign on 4 player online co-op on the hardest difficulty with everyone in ghosts and iron skull on (enemies dodge vehicles and grenades more often) . For Brainpan, find the six hidden skulls on all of the new Mythic maps on the multi-player disc. The final three require Halo 3 ODST campaign disc. For Endure, play firefight on heroic difficulty on 4 player Live co-op and pass the fourth set completely. Don't make the common mistake of quitting when you get to the fourth set. Deja Vu requires you to do the last mission on the hardest difficulty with four people and no heavy vehicles. Hint: there are ATVs and almost infinite ammo rocket launchers under the highway to make this slightly easier than impossible. Classic is to do any level on legendary alone on Live with no shots or grenades fired. Pick any level that you can zoom through with a ghost and later a warthog with a marine on turret like Uplift Reserve. If you get them all, prepare for adoration and lots of friend requests from lesser players. Good luck.