Rank (Halo: Reach)

The Ranking System in Halo: Reach is based on Credits (cR) earned through Forge, Multiplayer, Campaign, and Firefight matches. Credits are earned after every game, and you earn extra credits for medals earned during the match, (e.g. Double Kills) victory bonuses, commendations, and Daily/Weekly challenges. There are currently 50 ranks.

Note that Credits spent on armory purchases do not decrease your rank. However, Credits (cR) earned from any other feature (Forge and Custom Games) are significantly lower than those awarded for playing multiplayer via Xbox Live.