Achievements (Halo 3)

This is a list of Halo 3 Achievements.

There are 49 achievements worth a total of 1000 Gamerscore.

Level Completion
Finish the first mission of the Campaign on Normal, Heroic, or Legendary.
 * Landfall (20G)

Finish the second mission of the Campaign on Normal, Heroic, or Legendary.
 * Holdout (20G)

Finish the third mission of the Campaign on Normal, Heroic, or Legendary.
 * The Road (20G)

Finish the fourth mission of the Campaign on Normal, Heroic, or Legendary.
 * Assault (30G)

Finish the fifth mission of the Campaign on Normal, Heroic, or Legendary.
 * Cleansing (30G)

Finish the sixth mission of the Campaign on Normal, Heroic, or Legendary.
 * Refuge (30G)

Finish the seventh mission of the Campaign on Normal, Heroic, or Legendary.
 * Last Stand (40G)

Finish the eighth mission of the Campaign on Normal, Heroic, or Legendary.
 * The Key (40G)

Finish the final mission of the Campaign on Normal, Heroic, or Legendary.
 * Return (50G)

Campaign Completion
Finish the Campaign on Normal.
 * Campaign Complete: Normal (125G)

Finish the Campaign on Heroic (unlocks achievement for Normal, if not earned).
 * Campaign Complete: Heroic (125G)

Finish the Campaign on Legendary (unlocks achievements for Normal and Heroic, if not earned).
 * Campaign Complete: Legendary (125G)

Skulls
Finish the Campaign on Normal, Heroic, or Legendary, then find and claim this skull.
 * Iron (10G)

Finish the Campaign on Normal, Heroic, or Legendary, then find and claim this skull.
 * Black Eye (10G)

Finish the Campaign on Normal, Heroic, or Legendary, then find and claim this skull.
 * Tough Luck (10G)

Finish the Campaign on Normal, Heroic, or Legendary, then find and claim this skull.
 * Catch (10G)

Finish the Campaign on Normal, Heroic, or Legendary, then find and claim this skull.
 * Fog (10G)

Finish the Campaign on Normal, Heroic, or Legendary, then find and claim this skull.
 * Famine (10G)

Finish the Campaign on Normal, Heroic, or Legendary, then find and claim this skull.
 * Thunderstorm (10G)

Finish the Campaign on Normal, Heroic, or Legendary, then find and claim this skull.
 * Tilt (10G)

Finish the Campaign on Normal, Heroic, or Legendary, then find and claim this skull.
 * Mythic (10G)

Others
Locate and access all Terminals in the Campaign.
 * Marathon Man (40G)

Multiplayer Rank
Earn 5 EXP or finish 10 games to complete the requirements for basic training (Online).
 * Graduate (10G)

Earn your Sergeant rating to be recognized as a true Spartan (Online).
 * UNSC Spartan (15G)

Advance to the Spartan Officer ranks (Online).
 * Spartan Officer (25G)

Multiplayer Achievements
Score a Double Kill with a single spartan laser shot in a ranked free for all playlist (Online).
 * Two for One (5G)

Destroy an enemy banshee with the spartan laser or missile pod in a ranked playlist or in campaign.
 * Too Close to the Sun (5G)

Kill 3 enemies within 4 seconds of one another in a ranked free for all playlist (Online).
 * Triple Kill (5G)

Kill 4 enemies within 4 seconds of one another in a ranked free for all playlist (Online).
 * Overkill (5G)

Score 5 grenade sticks in any ranked free for all playlist (Online).
 * Lee R Wilson Memorial (5G)

Destroy an enemy vehicle with equipment in a ranked playlist or in campaign.
 * We’re in for some Chop (5G)

Kill 10 enemies without dying in any ranked free for all playlist (Online).
 * Killing Frenzy (5G)

Score a Triple Kill with the sword in a ranked free for all playlist (Online).
 * Steppin' Razor (5G)

Splatter an enemy with the mongoose in a ranked free for all playlist (Online).
 * Mongoose Mowdown (5G)

Kill 5 enemies by melee or assassination in a ranked free for all playlist (Online).
 * Up Close and Personal (5G)

Kill 5 enemies with the needler in a ranked free for all playlist or in campaign.
 * Fear the Pink Mist (5G)

Kill 10 enemies with headshots in a ranked free for all playlist or in campaign.
 * Headshot Honcho (5G)

Destroy a vehicle that has three enemies in it in a ranked playlist or in campaign.
 * Used Car Salesman (5G)

Earn the MVP in any ranked playlist (Online).
 * MVP (5G)

Board the same vehicle within 10 seconds after being boarded in any free for all playlist (Online).
 * Maybe Next Time Buddy (5G)

Meta-games
Score over 15,000 points in the Campaign meta-game on the first mission.
 * Guerilla (10G)

Score over 15,000 points in the Campaign meta-game on the second mission.
 * Demon (10G)

Score over 15,000 points in the Campaign meta-game on the third mission.
 * Cavalier (10G)

Score over 15,000 points in the Campaign meta-game on the fourth mission.
 * Askar (10G)

Score over 15,000 points in the Campaign meta-game on the fifth mission.
 * Exterminator (10G)

Score over 15,000 points in the Campaign meta-game on the sixth mission.
 * Ranger (10G)

Score over 15,000 points in the Campaign meta-game on the seventh mission.
 * Vanguard (10G)

Score over 15,000 points in the Campaign meta-game on eighth mission.
 * Orpheus (10G)

Score over 15,000 points in the Campaign meta-game on the final mission.
 * Reclaimer (10G)

Trivia

 * The achievement, "Askar" is actually in Bahasa Melayu (the formal language in Malaysia) and the meaning is soldier.