Spartan (10)
Mark VI…..Available at start
CQB………..Available at start
EVA……………..Complete Campaign on Normal, Heroic, or Legendary
EOD……………..Complete Campaign on Legendary
Security………..Earn 1,000 Gamerscore Points
Scout…………….Unlock "Used Car Salesman" Achievement (Destroy an enemy vehicle containing 3 enemies in Campaign or ranked playlists)
Mark V………….Unlock "UNSC Spartan" Achievement (Reach Sergeant ranking online)
ODST……………Unlock "Spartan Graduate" Achievement (Earn 5 EXP or complete 10 ranked matches)
Rogue………….Unlock "Spartan Officer" Achievement (Advance to the Spartan Officer ranks online)
Hayabusa……All 13 skulls found
Elite
Flight……………Complete Campaign on Heroic or Legendary
Ascetic………….Unlock "Steppin' Razor" Achievement (Get one triple kill with an energy sword in ranked FFA)
Commando….Unlock "Overkill" Achievement (Get one overkill) Shoulder Pieces Spartan (7)
Mark VI…..Available at start
CQB………..Available at start
EVA……………..Complete The Ark on Normal, Heroic, or Legendary
EOD…………….Complete The Ark on Legendary
Security
……….Earn 750 Gamerscore Points
Scout……………Unlock "We're in for some Chop" Achievement (Destroy an enemy vehicle with a piece of equipment in a ranked playlist or campaign)
Hayabusa……9 skulls found
Elite
Flight……………Complete The Ark on Heroic or Legendary
Ascetic…………Unlock "Overkill" Achievement (Get one overkill)
Commando….Unlock "Killing Frenzy" Achievement (Get one killing frenzy) Body Pieces Spartan (6)
Mark VI…..Available at start
CQB………..Available at start
EVA……………..Complete Tsavo Highway on Normal, Heroic, or Legendary
EOD……………..Complete Tsavo Highway on Legendary
Scout……………Unlock "Too Close to the Sun" Achievement (Destroy an enemy banshee with the Sp'laser or missile pod in a ranked playlist or campaign)
Hayabusa…..5 skulls found
Elite
Flight……………Complete Tsavo Highway on Heroic or Legendary
Ascetic…………Unlock "Up Close and Personal" Achievement (Kill 5 enemies via melee or assassination in a ranked FFA playlist)
Commando….Unlock "Triple Kill" Achievement (Get one triple kill) http://www.digitalbattle.com/2007/09/30/unlock-all-halo-3-armor/
http://hubpages.com/hub/Halo-3-Armor
go to http://hubpages.com/hub/Halo-3-Armor
you get all the vidmaster achievements on halo 3 and halo 3 odst
No.
All the armor are the same it's just the way how you want to look WRONG! the best armor in halo 3 is the recon armor and you have to be a member of bungie OR get all 7 vidmasters in halo 3 ODST
There is no glitch.
By getting skulls.
There is no cheats.
get all skulls
To get security armor in Halo 3... all you have to do is get all of the original 49 achievements (you don't need the new mythic or legendary achievements).
there is no permanent cheats in halo 3. you need to unlock them by achievments. and, you can not get the flaming armor effect, it is only for bungie employees. in halo reach, buy the legendary package to get that armor effect.
All in halo 3 and all in Halo 3 ODST.