New Acquaintances
Complete Chapter 3 - New Acquaintances on any difficulty
5/14/2011
10:46:18 PM
Common 62.7%
Professional
Earn all 3 stars in at least 15 different Special Op missions.
5/7/2011
11:45:30 PM
Ultra Rare 3.2%
Operative
Earn all 3 stars in at least 10 different Special Op missions.
4/24/2011
11:45:10 PM
Very Rare 5.6%
Downed but Not Out
Kill 4 enemies in a row while downed in Special Ops.
4/23/2011
9:39:55 PM
Very Rare 5.8%
It Goes to Eleven
Earn at least 1 star in 11 different Special Op missions.
4/23/2011
1:11:02 PM
Rare 17.0%
Desperado
Kill 5 enemies in a row using 5 different weapons or attachments in Single Player or Special Ops.
4/23/2011
12:04:51 PM
Rare 21.2%
Pit Boss
Run The Pit in 'S.S.D.D' and finish with a final time under 30 seconds.
4/22/2011
8:03:54 PM
Ultra Rare 2.8%
Operational Asset
Earn all 3 stars in at least 5 different Special Op missions.
4/22/2011
7:35:18 PM
Very Rare 9.7%
Ghost
Plant the C4 in 'Cliffhanger' without alerting or injuring anyone in the blizzard.
4/22/2011
7:12:02 PM
Ultra Rare 3.1%
No Rest For the Wary
Knife an enemy without him ever knowing you were there in Single Player or Special Ops.
4/22/2011
6:59:34 PM
Rare 25.3%
Look Ma Two Hands
Kill 10 enemies in a row using akimbo weapons in Single Player or Special Ops.
4/22/2011
6:49:50 PM
Rare 12.6%
Off the Grid
Complete 'Just Like Old Times' and 'Endgame' on Veteran Difficulty.
4/22/2011
6:35:03 PM
Ultra Rare 3.7%
The Price of War
Complete the single player campaign on Hardened or Veteran Difficulty.
4/22/2011
6:34:55 PM
Very Rare 5.8%