Halo 3

Landfall
Common

Finish the first mission of the Campaign on Normal, Heroic, or Legendary.

Holdout
Common

Holdout

20

Finish the second mission of the Campaign on Normal, Heroic, or Legendary.

The Road
Common

Finish the third mission of the Campaign on Normal, Heroic, or Legendary.

Assault
Common

Assault

30

Finish the fourth mission of the Campaign on Normal, Heroic, or Legendary.

Cleansing
Common

Finish the fifth mission of the Campaign on Normal, Heroic, or Legendary.

Refuge
Common

Refuge

30

Finish the sixth mission of the Campaign on Normal, Heroic, or Legendary.

Last Stand
Common

Finish the seventh mission of the Campaign on Normal, Heroic, or Legendary.

The Key
Common

The Key

40

Finish the eighth mission of the Campaign on Normal, Heroic, or Legendary.

Return
Common

Return

50

Finish the final mission of the Campaign on Normal, Heroic, or Legendary.

Campaign Complete:  Heroic
Uncommon

Finish the Campaign on Heroic (unlocks achievement for Normal, if not earned).

Campaign Complete:  Legendary
Uncommon

Finish the Campaign on Legendary (unlocks achievements for Normal and Heroic, if not earned).

Iron
Common

Iron

10

Find and claim this skull when playing on Normal, Heroic or Legendary difficulty.

Black Eye
Common

Find and claim this skull when playing on Normal, Heroic or Legendary difficulty.

Tough Luck
Uncommon

Find and claim this skull when playing on Normal, Heroic or Legendary difficulty.

Catch
Uncommon

Catch

10

Find and claim this skull when playing on Normal, Heroic or Legendary difficulty.

Fog
Uncommon

Fog

10

Find and claim this skull when playing on Normal, Heroic or Legendary difficulty.

Famine
Uncommon

Famine

10

Find and claim this skull when playing on Normal, Heroic or Legendary difficulty.

Thunderstorm
Uncommon

Find and claim this skull when playing on Normal, Heroic or Legendary difficulty.

Tilt
Uncommon

Tilt

10

Find and claim this skull when playing on Normal, Heroic or Legendary difficulty.

Mythic
Uncommon

Mythic

10

Find and claim this skull when playing on Normal, Heroic or Legendary difficulty.

Graduate
Common

Earn 5 EXP or finish 10 games to complete the requirements for basic training (Online).

UNSC Spartan
Uncommon

Earn your Sergeant rating to be recognized as a true Spartan (Online).

Spartan Officer
Rare

Advance to the Spartan Officer ranks (Online).

Two for One
Rare

Score a Double Kill with a single spartan laser shot in a ranked free for all playlist (Online).

Too Close to the Sun
Uncommon

Destroy an enemy banshee with the spartan laser or missile pod in a ranked playlist or in campaign.

Triple Kill
Rare

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

Overkill
Rare

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

Lee R Wilson Memorial
Rare

Score 5 grenade sticks in any ranked free for all playlist (Online).

We’re in for some Chop
Rare

Destroy an enemy vehicle with equipment in a ranked playlist or in campaign.

Killing Frenzy
Rare

Kill 10 enemies without dying in any ranked free for all playlist (Online).

Steppin' Razor
Rare

Score a Triple Kill with the sword in a ranked free for all playlist (Online).

Mongoose Mowdown
Rare

Splatter an enemy with the mongoose in a ranked free for all playlist (Online).

Up Close and Personal
Uncommon

Kill 5 enemies by melee or assassination in a ranked free for all playlist (Online).

Fear the Pink Mist
Common

Kill 5 enemies with the needler in a ranked free for all playlist or in campaign.

Headshot Honcho
Uncommon

Kill 10 enemies with headshots in a ranked free for all playlist or in campaign.

Used Car Salesman
Common

Destroy a vehicle that has three enemies in it in a ranked playlist or in campaign.

Marathon Man
Rare

Locate and access all Terminals in the Campaign.

MVP
Uncommon

MVP

5

Earn the MVP in any ranked playlist (Online).

Maybe Next Time Buddy
Rare

Board the same vehicle within 10 seconds after being boarded in any free for all playlist (Online).

Guerilla
Rare

Score over 15,000 points in the Campaign meta-game on the first mission.

Demon
Rare

Demon

10

Score over 15,000 points in the Campaign meta-game on the second mission.

Cavalier
Rare

Score over 15,000 points in the Campaign meta-game on the third mission.

Askar
Rare

Askar

10

Score over 15,000 points in the Campaign meta-game on the fourth mission.

Exterminator
Rare

Score over 15,000 points in the Campaign meta-game on the fifth mission.

Ranger
Rare

Ranger

10

Score over 50,000 points in the Campaign meta-game on the sixth mission.

Vanguard
Rare

Score over 50,000 points in the Campaign meta-game on the seventh mission.

Orpheus
Rare

Orpheus

10

Score over 15,000 points in the Campaign meta-game on the eighth mission.

Reclaimer
Rare

Score over 15,000 points in the Campaign meta-game on the final mission.

Title Update: Legendary Map Pack

7 Achievements worth 250 Gamerscore
Double Double
Rare

On a Legendary map, get two Double Kills during any ranked or social match.

Alas, Poor Yorick
Rare

On a Legendary map, get 3 Oddball melee kills during any ranked or social match.

Came… From… Behind
Rare

On a Legendary map, get 3 assassinations during any ranked or social match.

Defend This
Rare

On a Legendary map, get a flag melee kill during any ranked or social match.

Flag Dropped
Rare

On a Legendary map, get 2 flag carrier kills during any ranked or social match.

Road Rage
Rare

On a Legendary map, get 5 Warthog chaingun kills during any ranked or social match.

Look Both Ways
Rare

On a Legendary map, get a Splatter Spree during any ranked or social match.

Title Update: Mythic Map Pack

13 Achievements worth 325 Gamerscore
Hammer Time
Rare

On Assembly, get 5 Hammer kills during any ranked or social match.

Post Mortem
Rare

On Orbital, get 2 Death From the Grave medals during any ranked or social match.

 … Get the Horns
Rare

On a Mythic map, get a Bulltrue medal during any ranked or social match.

Awww, Too Bad
Rare

On a Mythic map, get a Killjoy medal during any ranked or social match.

Killtacular
Rare

On a Mythic map, get a Killtacular during any ranked or social match.

Have Fun Respawning
Rare

On a Mythic map, get an Extermination during any ranked or social match.

Save This Film
Rare

On a Mythic map, get a Perfection medal during any ranked or social match.

Delicious Brains
Rare

On a Mythic map, infect 2 humans during any ranked or social match.

Zombie Repeller
Rare

On a Mythic map, kill 2 Zombies during any ranked or social match.

Tank Dropper
Rare

On any Mythic map, get a kill on another player while in monitor mode.

Assembly Skull
Rare

On Assembly, find the hidden skull.

Orbital Skull
Rare

On Orbital, find the hidden skull.

Sandbox Skull
Rare

On Sandbox, find the hidden skull.

Title Update: Mythic II Map Pack

6 Achievements worth 150 Gamerscore
Pull
Rare

Pull

25

On Citadel, get a Shotgun Spree during any ranked or social match.

Blades of Fury
Rare

On Heretic, get a Sword Spree during any ranked or social match.

Ghost Patrol
Rare

On Longshore, get 3 kills with a Ghost during any ranked or social match.

Citadel Skull
Rare

On Citadel, find the hidden skull.

Heretic Skull
Rare

On Heretic, find the hidden skull.

Longshore Skull
Rare

On Longshore, find the hidden skull.

Title Update: Vidmaster Challenges

4 Achievements worth 25 Gamerscore
Vidmaster Challenge: Annual
Rare

After 9/25/08, complete Halo on 4-player Legendary LIVE co-op, with Iron, and everyone in Ghosts.

Vidmaster Challenge: Brainpan
Rare

Find all the hidden skulls on the Mythic maps.

Vidmaster Challenge: Lightswitch
Rare

Get to the rank of Lieutenant in any playlist in the new EXP progression system.

Vidmaster Challenge: 7 on 7
Rare

Enter into any ranked or social playlist with 7 EXP on the 7th of the month.

79
1,750
4,743
767
565
Developer
Bungie
Publisher
Microsoft Studios
Platforms
Xbox 360