yes because it is customizable, it was revealed in the extended gameplay in the space mission
By playing Halo (online, campaign, and otherwise) you earn credits, which you can then use to purchase armors. You can also complete specialties and get armor that way. All can be accessed through the menu.
Buy halo reacj armor in the startup menu in the armory for credits in online games
Get sculls or get achievements
Halo Reach armor is sold with a credit system which you earn credits in the game itself by playing. Halo 3 armor you must unlock with achievements and completing certain aspects of the game.
beat campaign on legendary
go through the story mode/campaign.
You have to find all the skulls in campaign mode.
The best places to get armor is to beat the campaign, collect skulls, or through online game play.
To get credits in Halo: Reach with a silver, or offline account, you need to play offline Campaign, Forge mode, or local Custom Games.
To unlock Recon armor in Halo 3, you originally had to beat all of the VidMaster achievments, but the armor is now available to all players. To unlock the recon armor in Halo: Reach you had to pre-order the game and you would get a long (25 character) code for the recon armor DLC. To unlock the recon armor in Halo 4, you had to either pre-order the game or simply buy the armor with your in-game credits.
Most armor is unlockable by rank, then made buyable with credits. Some of the halo reach armor is unlocked via halo waypoint (downloadable in xbox dashboard). Other armor such as the flaming helmet are unlocked from a code that comes with certain sets of the game. ( legendary edition, pre-order, etc.
you need to turn on scoring.