| Icon
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Name
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Requirement
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Credit Reward
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Date
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| Weekly Challenges
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Legendary Friends
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Complete any Campaign mission on Legendary in co-op mode.
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2500 cR
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September 27-October 3, 2010
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That's Dedication, Holmes
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Complete 30 games in multiplayer Matchmaking this week.
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1500 cR
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September 20-26, 2010
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This is How We Do It
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Complete 9 Campaign missions on Heroic.
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5000 cR
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September 14-19, 2010
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| Daily Challenges
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One Spartan Army
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Kill 400 enemies in Firefight Matchmaking.
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2000 cR
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September 30, 2010
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Be Their Huckleberry
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Kill 40 enemies in Firefight Matchmaking with the pistol.
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900 cR
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September 30, 2010
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Going Outpost-al
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Kill 100 enemies on Outpost on Heroic in Firefight Matchmaking.
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800 cR
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September 30, 2010
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Bulletproof
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Complete 1 Rounds in a Firefight Matchmaking game without dying.[1]
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450 cR
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September 30, 2010
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More than a Handful
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Kill 77 enemies in multiplayer Matchmaking.
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750 cR
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September 29, 2010
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On Tilt
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Complete a Campaign mission on Heroic or harder with the Tilt Skull on.
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500 cR
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September 29, 2010
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Multiplier
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Earn 5 multikills in a multiplayer Matchmaking game.
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1200 cR
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September 29, 2010
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Oops! All Kills
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Earn 7 Multikills in multiplayer Matchmaking.
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777 cR
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September 29, 2010
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Shootin' and Lootin'
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Kill 150 enemies in any game mode in Reach.
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1500 cR
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September 28, 2010
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Survivor
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Earn 7 Sprees in a Firefight Matchmaking game.
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1200 cR
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September 28, 2010
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Put Your Quarter Up
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Complete 10 games in multiplayer Matchmaking.
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1000 cR
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September 28, 2010
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Close Talking
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Earn 40 kills with close quarters combat in multiplayer Matchmaking.
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600 cR
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September 28, 2010
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Light Fare
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Kill 40 enemies in any game mode in Reach.
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400 cR
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September 27, 2010
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A Friend in Need
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Earn 10 assists in Firefight Matchmaking.
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600 cR
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September 27, 2010
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Return of the Mack
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Kill 50 Elites in Campaign today on Normal or harder.
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1500 cR
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September 27, 2010
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Headshot Honcho
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Kill 9 enemies with headshots in a multiplayer Matchmaking game.
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700 cR
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September 27, 2010
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Shootin' and Lootin'
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Kill 250 enemies in any game mode in Reach.
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2500 cR
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September 26, 2010
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Office of Not Dying
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Complete ONI on Legendary without dying.
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1250 cR
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September 26, 2010
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J.H. Death Machine
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Kill 20 enemies in Firefight Matchmaking with the Grenade Launcher.
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500 cR
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September 26, 2010
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Heroic Holdout
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Kill 50 enemies on Holdout on Heroic in Firefight Matchmaking.
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600 cR
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September 26, 2010
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One Spartan Army
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Kill 400 enemies in Firefight Matchmaking.
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2000 cR
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September 25, 2010
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Short, Controlled Bursts
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Kill 100 enemies with automatic weapons in the Campaign today.
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1500 cR
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September 25, 2010
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Roast 'em, Toast 'em
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Kill 10 enemies while jet-packing in Exodus on Normal.
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600 cR
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September 25, 2010
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Vengeance Found
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Earn your 'Revenge' in a multiplayer Matchmaking game.
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700 cR
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September 25, 2010
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Gunslinger
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Kill 100 enemies in multiplayer Matchmaking.
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1000 cR
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September 24, 2010
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I Need Some Ammo
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Complete a Campaign mission on Heroic or harder with the Famine Skull on.
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500 cR
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September 24, 2010
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Orbital Assists
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Kill 20 enemies using the Target Designator in Firefight Matchmaking.
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750 cR
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September 24, 2010
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Double Double
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Earn 2 Double Kills in the same match in Multiplayer Matchmaking.
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350 cR
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September 24, 2010
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Where There's Smoke...
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Kill 40 enemies in Firefight Matchmaking.
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400 cR
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September 23, 2010
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Shootin' and Lootin'
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Kill 250 enemies in any game mode in Reach.
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2500 cR
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September 23, 2010
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A Satisfied Thirst
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Kill 100 Grunts in Firefight Matchmaking.
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1500 cR
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September 23, 2010
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That Pink Mist
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Kill 20 enemies with a Supercombine from the Needler or Needle Rifle in Firefight Matchmaking.
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400 cR
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September 23, 2010
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Secondary Fire
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Earn 50 assists today in multiplayer Matchmaking.
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1000 cR
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September 22, 2010
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More than a Handful
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Kill 125 enemies in multiplayer Matchmaking.
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1250 cR
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September 22, 2010
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Throwing Fireballs
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Kill 8 enemies with grenades in a multiplayer Matchmaking game.
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500 cR
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September 22, 2010
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Go Right Ahead Folks
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Earn a First Strike in a multiplayer Matchmaking game.
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600 cR
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September 22, 2010
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Gunslinger
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Kill 100 enemies in multiplayer Matchmaking.
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1000 cR
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September 21, 2010
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A Great Friend
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Earn 15 assists today in multiplayer Matchmaking.
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300 cR
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September 21, 2010
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The Little Guys
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Kill 200 Grunts in Campaign today on Normal or harder.
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1000 cR
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September 21, 2010
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Heroic Demon
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Kill 30 Elites in Firefight Matchmaking on Heroic or harder.
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1500 cR
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September 21, 2010
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Fire When Ready
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Kill 50 enemies in multiplayer Matchmaking
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500 cR
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September 20, 2010
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A Great Friend
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Earn 15 assists today in multiplayer Matchmaking.
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300 cR
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September 20, 2010
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There Are Many Like...
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Kill 50 enemies with precision weapons in the Campaign today.
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500 cR
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September 20, 2010
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Roast 'em, Toast 'em
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Kill 10 enemies while jet-packing in Exodus on Normal.
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600 cR
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September 20, 2010
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More than a Handful
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Kill 125 enemies in multiplayer Matchmaking.
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1250 cR
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September 19, 2010
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Where There's Smoke...
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Kill 50 enemies in Firefight Matchmaking.
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500 cR
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September 19, 2010
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The T.G. Opposition
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Kill 20 enemies in Firefight Matchmaking with the Shotgun.
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300 cR
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September 19, 2010
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I'm Rubber, You're Glue
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Earn 1 sticky grenade Kills in a multiplayer Matchmaking game.
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200 cR
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September 19, 2010
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There Are Many Like...
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Kill 100 enemies with precision weapons in the Campaign today.
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1000 cR
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September 18, 2010
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Short, Controlled Bursts
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Kill 50 enemies with automatic weapons in the Campaign today.
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500 cR
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September 18, 2010
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Above the Law
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Complete a Round in Firefight Matchmaking without dying.
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500 cR
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September 18, 2010
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Un, Deux, Trois
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Win 3 games in multiplayer Matchmaking.
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300 cR
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September 18, 2010
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Gunslinger
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Kill 150 enemies in multiplayer Matchmaking.
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1500 cR
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September 17, 2010
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A Great Friend
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Earn 30 assists today in multiplayer Matchmaking.
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600 cR
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September 17, 2010
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Double Double
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Earn 2 Double Kills in the same match in Multiplayer Matchmaking.
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350 cR
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September 17, 2010
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A Solid Outing
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Earn at least 12 kills in a multiplayer Matchmaking game.
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800 cR
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September 17, 2010
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A Friend in Need
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Earn 5 assists in Firefight Matchmaking.
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100 cR
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September 16, 2010
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A Satisfied Thirst
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Kill 100 Grunts in Firefight Matchmaking.
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1500 cR
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September 16, 2010
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Demon
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Kill 10 Elites in Firefight Matchmaking.
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400 cR
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September 16, 2010
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Hyper Lethal Vector
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Kill 100 enemies with headshots in Firefight Matchmaking.
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2000 cR
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September 16, 2010
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Fire When Ready
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Kill 30 enemies in multiplayer Matchmaking.
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300 cR
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September 15, 2010
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One Spartan Army
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Kill 30 enemies in Firefight Matchmaking.
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300 cR
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September 15, 2010
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T-Hug It Out
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Kill 7 enemies with close quarters combat in a multiplayer Matchmaking game.
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350 cR
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September 15, 2010
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Aggressive Negotiations
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Earn at least 17 kills in a multiplayer Matchmaking game.
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1200 cR
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September 15, 2010
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Gunslinger
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Kill 75 enemies in multiplayer Matchmaking.
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750 cR
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September 14, 2010
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One Spartan Army
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Kill 100 enemies in Firefight Matchmaking.
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1000 cR
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September 14, 2010
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Heroic Killagruntjaro!
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Earn 10 multikills in a Firefight Matchmaking game on Heroic or harder.
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1000 cR
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September 14, 2010
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Sweep the Leg
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Perform an Assassination in a multiplayer Matchmaking game.
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250 cR
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September 14, 2010
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