Halo 2 Cheats

Acheivements
Complete the following tasks to earn the desired achievement. Note that these only work on the PC version; they will NOT work in the Xbox version.

(Campaign level goes here) (30 each): Complete each level (seperate achievements) on Normal, Heroic, or Legendary. There are 13 levels (not counting tutorial) for a total of 390 points.
Air Traffic Control (20): Blow up the Banshee in flight while manned, with grenades or the rocket launcher
Assassin (10): Melee an opponent from behind
Bonecracker (10): Hit and kill an opponent from behind
Carjacking (5): Steal an occupied vehicle from an opponent and take it over
Counterpoint (5): Kill the sword carrier
Decorated Soldier (10): Get awarded at least 8 different medals in one non-team game
Demon (25): Complete any level without dying. The tutorial level does not count
Double Kill (20): Kill 2 opponents within 4 seconds
Go Ape Shiv (20): Kill an enraged, berserk Brute by melee
Hero (50): Complete the game on Heroic difficulty
Hired Gun (20): If you know someone in the game who has completed the game on Legendary, then kill him
Killing Spree (20): Kill 5 opponents in a row in the same game, without dying
Killtacular (20): 4 opponents
King of the Scrab (20): Aquire the Scrab gun on the Metropolis level
Legend (50): Complete the game on Legendary difficulty
Ninja (20): In a non-team game, kill 5 people by melee, from behind
Rainman (25): Play every game variant, with at least 3 other players, until the end of the game
Roadkill (10): Run over, hit and kill an opponent with a vehicle
Running Riot (20): 10 opponents, same condition
Skewer Stopper (20): Kill the sword carrier, after he/she has killed 5 or more opponents in a row with the sword
Slient but Deadly (20): Kill 7 enemies in a row without being spotted
Stick It (5): Stick an opponent (MP): with a plasma grenade and blow them up
Triple Kill (20): 3 opponents
Vigilante (10): End someone's killing spree
Violent Cartographer (25): Play every default map and stay in the game until it's over
Warrior (100): Complete the game on Normal difficulty