Bungie kommer uppdatera Halo 3 senare denna månad, men utöver mindre märkbara justeringar för att sätta dit fuskare och finslipa detaljer i matchmakingen kommer vi även få en packe nya achievements. Listan nedan innehåller dock inte alla då Bungie utlovat ännu fler än så.
Vidmaster Challenge: Lightswitch (0 points)
Get to the rank of Lieutenant in any playlist in the new EXP progression system.
Vidmaster Challenge: 7 on 7 (0 points)
Enter into any ranked or social playlist with 7 EXP on the 7th of the month.
Vidmaster Challenge: Annual (0 points)
After 9/25/08, complete Halo on 4-player Legendary LIVE co-op, with Iron, and everyone in Ghosts.
Double Double (25 points)
On a Legendary map, get two Double Kills during any ranked or social match.
Poor Yorick (25 points)
On a Legendary map, get 3 Oddball melee kills during any ranked or social match.
Came...From...Behind (50 points)
On a Legendary map, get 3 assassinations during any ranked or social match.
Defend This (50 points)
On a Legendary map, get a flag melee kill during any ranked or social match.
Flag Dropped (25 points)
On a Legendary map, get 2 flag carrier kills during any ranked or social match.
Road Rage (25 points)
On a Legendary map, get 5 Warthog chaingun kills during any ranked or social match.
Look Both Ways (50 points)
On a Legendary map, get a Splatter Spree during any ranked or social match.