Spartan (Heads)
Mark VI: Already Unlocked.
CQB: Already Unlocked.
EVA: Complete Campaign on Normal, Heroic or Legendary.
EOD: Complete Campaign on Legendary.
Hayabusa: Collect all 13 skulls.
Scout: Unlock the "Used Car Salesman" achievment.
ODST: Unlock the "Spartan Graduate" achievment.
Mark V: Unlock the "UNSC Spartan" achievment.
Rogue: Unlock the "Spartan Officer" achievment.
Security: Get 49/79 achievments.
Recon: Unlock all Vidmaster Achievments (Halo 3 ODST needed).
Elite (Heads)
Combat: Already Unlocked.
Assault: Already Unlocked.
Commando: Unlock the "Overkill" achievment.
Flight: Complete Campaign on Herioc or Legendary.
Ascetic: Unlock the "Steppin' Razor" achievment.
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Spartan (Shoulders)
Mark VI: Already Unlocked.
CQB: Already Unlocked.
EVA: Complete "The Ark" on Normal, Herioc or Legendary.
EOD: Complete "The Ark" on Legendary.
Hayabusa: Collect 9 skullls.
Scout: Unlock the "Mongoose Mowdown" achievment.
Security: Get 750/1750 gamerscore.
Recon: Unlock all Vidmaster Achivements (Halo 3 ODST needed).
Elites (Shoulders)
Combat: Already Unlocked.
Assault: Already Unlocked.
Commando: Already Unlocked.
Flight: Complete "The Ark" on Herioc or Legendary.
Ascetic: Unlock the "Overkill" achievment.
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Spartan (Bodies)
Mark VI: Already Unlocked.
CQB: Already Unlocked.
EVA: Complete "Tsavo Highway" on Normal, Herioc or Legendary.
EOD: Complete "Tsavo Highway" on Legendary.
Hayabusa: Collect 5 skulls.
Scout: Unlock the "Too Close to the Sun" achievement.
Recon: Unlock all Vidmaster Achievement (Halo 3 ODST needed).
Bungie: Only Bungie employees can get flaming helmet.
Elites (Bodies)
Combat: Already Unlocked.
Assault: Already Unlocked.
Commando: Unlock the "Triple Kill" achievement.
Flight: Complete "Tsavo Highway" on Herioc or Legendary.
Ascetic: Unlock the "Up Close and Personal" achievement.
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I hope this answers your question
iFirePenguinAirstrike
http://hubpages.com/hub/Halo-3-Armor
To get armor on halo three... There are several types of armor such as the hayabusa. To get this armor you will need to obtain all of the skulls. But like I said before, there's all different kinds of armor.For more info, check out the site called www.halo3planet.com
recon will become regularly available after halo 3: ODST comes out in september. You can obtain it by completing all the vidmaster challenge achievements.
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).