Spartan Armor
Mark VI - Normal armour; this is the default Halo 3 armour. It allows your shields to regenerate quicly and it was in the Halo 2 game. This armour is ulocked from start.

Mark V - Master Chief's armour from Halo 1, it has a larger visor and is not as detailed. This armour is unlocked when you become a Luteniant, which also unlocks the UNSC Spartan achievement

CQB - (Close Quarters Battle Armour)- This armour has a bit more protaction and less visor. It appears that on the top of the helmet is a radio set. This armour is available from start

EVA - (Extra Vehicular Activity Armour); This armour allows you to see more with the visor being large. This allows you to see better while driving any vehicles. This is one of my favorite Halo 3 armour. Unlocked by beating the campaign on Normal, Heroic, or Legendary

EOD - This is another one of my favorite Halo 3 armour permutations. This allows just your eyes to show through the visor. At the bottom of the helmet seems to be a voice outlet, which allows your voice to be heard better. Unlocked by beating the campaign on Legendary

Hayabusa -This is my favorite Halo 3 armour. It has a great helm which looks cool and is very stylin. The things at the top of the armour is used to show high ranking in the military. Unlocked by collecting all the skulls; The Katana sword can be added to the armour by completeing all of the achievments and getting all the skulls.

Security - Also known as "Marathon Armour"; Unlocked by getting all of the achievements

ODST - Orbital Drop ShockTroopers Armour; Unlocked by earning the Spartan Graduate Achievment

Scout - Head is unlocked by getting the the Used Car Salesman Achievement; Shoulders are unlocked by getting the Mongoose Mowdown Achievement; Body is unlocked by getting the Too Close to the Sun Achievement

Rouge - Unlocked by getting the Spartan Officer Achievement

Recon - Only available to Bungie Employees

Flaming Head - Only Available to Bungie Employees- One of my favorite halo 3 armour permutations.
