Halo 2 - Achievements

Cairo Station 30 points: Complete Cairo Station at Normal, Heroic, or Legendary.

Outskirts 30 points: Complete Outskirts at Normal, Heroic, or Legendary.

Metropolis 30 points: Complete Metropolis at Normal, Heroic, or Legendary.

The Arbiter 30 points: Complete The Arbiter at Normal, Heroic, or Legendary.

Oracle 30 points: Complete The Oracle at Normal, Heroic, or Legendary.

Delta Halo 30 points: Complete Delta Halo at Normal, Heroic, or Legendary.

Regret 30 points: Complete Regret at Normal, Heroic, or Legendary.

Sacred Icon 30 points: Complete Sacred Icon at Normal, Heroic, or Legendary.

Quarantine Zone 30 points: Complete Quarantine Zone at Normal, Heroic, or Legendary.

Gravemind 30 points: Complete Gravemind at Normal, Heroic, or Legendary.

Uprising 30 points: Complete Uprising at Normal, Heroic, or Legendary.

High Charity 30 points: Complete High Charity at Normal, Heroic, or Legendary.

The Great Journey 30 points: Complete The Great Journey at Normal, Heroic, or Legendary.

Warrior 100 points: Complete the game on Normal difficulty.

Hero 50 points: Complete the game on Heroic difficulty.

Legend 50 points: Complete the game on Legendary difficulty.

King of the Scarab 20 points: Acquire the Scarab gun on the Metropolis level, any difficulty.

Silent but Deadly 20 points: Kill 7 opponents from behind in a row without being spotted, any level, any difficulty.

Demon 25 points: Complete any campaign level without dying once on Normal, Heroic, or Legendary.

Go Ape Shiv 20 points: Kill an enraged, berserk Brute by melee, any level, any difficulty.

Stick It 5 points: Stick an opponent with a plasma grenade and blow them up.

Counterpoint 5 points: Kill the sword carrier.

Carjacking 5 points: Steal an occupied vehicle from an opponent and take it over.

Violent Cartographer 25 points: Play every available default map and stay in each game until it's over.

Rainman 25 points: Play every available game variant, with at least 3 other players, to the end of each game.

Double Kill 20 points: Kill 2 opponents within 4 seconds.

Triple Kill 20 points: Kill 3 opponents within 4 seconds.

Killtacular 20 points: Kill 4 opponents within 4 seconds.

Killing Spree 20 points: Kill 5 opponents in a row in the same game, without dying.

Running Riot 20 points: Kill 10 opponents in a row in the same game, without dying.

Sniper Kill 10 points: Kill an opponent with the sniper rifle or the beam rifle.

Roadkill 10 points: Run over, hit and kill an opponent with a vehicle.

Bonecracker 10 points: Hit and kill an opponent with a melee attack.

Assassin 10 points: Melee an opponent from behind.

Skewer Stopper 20 points: Kill the sword carrier after they kill 5 or more times in a row with the sword.

Vigilante 10 points: Stop a Killing Spree of another player.

Air Traffic Control 20 points: Blow up the Banshee in flight while manned, with grenades or the rocket launcher.

Decorated Soldier 10 points: Get awarded at least 8 different medals in one non-team game.

Ninja 20 points: In a non-team game, kill 5 people by melee, from behind.

Flaming Ninja 20 points: Kill an opponent that has the Ninja achievement.

Hired Gun 20 points: Kill an opponent who has the Legend achievement