Bungie har skickat ut en nedanstående bild, som innehåller alla de 49 achievements som finns att fånga i kommande Halo: Reach. Exakt vad varje bild betyder vill man dock inte tala, utan avslöjar bara sex av dem, så sätt igång och spekulera...
• A Monument to All Your Sins - Complete each Campaign Mission on Legendary - alone.
• Banshees, Fast and Low - Hijack a Banshee during the Reach Campaign.
• Yes, Sensei - Earn a First Strike Medal in a Matchmaking game.
• A New Challenger - Complete all of the Daily Challenges in a given day.
• Make It Rain - Purchase an item from the Armory that requires the rank of Lt. Colonel.
• If They Came to Hear Me Beg - Perform an Assassination against an Elite to survive a fall that would've been fatal.