The Halo Reach level cap right now is Lieutenant Colonel Grade 3. More levels and unlockable armor are on the way as soon as the level cap is lifted. This actually depends on the players, with there being no set date for the cap lift. All Halo Reach players must complete 117,000,000 (117 Million) Daily and Weekly Challenges. Bungie predicts that at the rate people are completing challenges the level cap will be lifted sometime this November. If you are a Lieutenant Colonel Grade 3 already and are still racking up credits then you should automatically be leveled up to where you should be if there was no cap, once the cap is lifted but this had not been confirmed. In case you have not been paying attention Bungie also added Campaign Matchmaking as well.