- How many Halo 3 achievements are there?
There are 79 achievements to unlock in Halo 3 worth a total of 1750 gamerscore.
Halo 3 Achievements
There are 79 achievements with a total of 1750 points
Finish the Campaign on Heroic (unlocks achievement for Normal, if not earned).
Finish the Campaign on Legendary (unlocks achievements for Normal and Heroic, if not earned).
Thunderstorm
10Find and claim this skull when playing on Normal, Heroic or Legendary difficulty.
Score a Double Kill with a single spartan laser shot in a ranked free for all playlist (Online).
Destroy an enemy banshee with the spartan laser or missile pod in a ranked playlist or in campaign.
Kill 3 enemies within 4 seconds of one another in a ranked free for all playlist (Online).
Destroy an enemy vehicle with equipment in a ranked playlist or in campaign.
Score a Triple Kill with the sword in a ranked free for all playlist (Online).
Splatter an enemy with the mongoose in a ranked free for all playlist (Online).
Kill 5 enemies by melee or assassination in a ranked free for all playlist (Online).
Kill 5 enemies with the needler in a ranked free for all playlist or in campaign.
Kill 10 enemies with headshots in a ranked free for all playlist or in campaign.
Destroy a vehicle that has three enemies in it in a ranked playlist or in campaign.
Board the same vehicle within 10 seconds after being boarded in any free for all playlist (Online).
DLC: Legendary Map Pack
There are 7 achievements with a total of 250 points
On a Legendary map, get 3 Oddball melee kills during any ranked or social match.
On a Legendary map, get 3 assassinations during any ranked or social match.
DLC: Mythic Map Pack 1
There are 13 achievements with a total of 325 points
DLC: Mythic Map Pack 2
There are 7 achievements with a total of 175 points
DLC: Game Title Update
There are 3 achievements with a total of 0 points
After 9/25/08, complete Halo on 4-player Legendary LIVE co-op, with Iron, and everyone in Ghosts.
Get to the rank of Lieutenant in any playlist in the new EXP progression system.
Enter into any ranked or social playlist with 7 EXP on the 7th of the month.