Master of Disaster
Break all of the coolant tanks aboard the Salvation without dying.
12/13/2010
8:38:14 PM
Very Rare 8.9%
No Rest For the Wary
Knife an enemy without him ever knowing you were there in Single Player or Special Ops.
12/13/2010
7:00:34 PM
Rare 25.3%
Out of the Frying Pan...
Complete the mission in the airplane graveyard.
12/13/2010
6:55:50 PM
Rare 33.0%
Unnecessary Roughness
Use a riot shield to beat down an enemy in Single Player or Special Ops.
12/9/2010
9:36:53 PM
Rare 34.5%
Some Like it Hot
Kill 6 enemies in a row using a thermal weapon in Single Player or Special Ops.
12/9/2010
9:18:13 PM
Rare 39.8%
Knock-knock
Kill 4 enemies with 4 shots during a slow-mo breach in Single Player or Special Ops.
12/9/2010
9:13:13 PM
Rare 15.2%
Desperado
Kill 5 enemies in a row using 5 different weapons or attachments in Single Player or Special Ops.
12/9/2010
8:51:04 PM
Rare 21.2%
The Harder They Fall
Kill 2 rappelling enemies in a row before they land on their feet in Single Player or Special Ops.
12/9/2010
8:43:42 PM
Rare 30.0%
Colonel Sanderson
Kill 7 chickens in under 10 seconds in 'The Hornet's Nest'.
12/9/2010
8:32:34 PM
Very Rare 6.8%
Ten plus foot-mobiles
Kill at least 10 enemies with one Predator missile in Single Player or Special Ops.
12/8/2010
9:28:56 PM
Rare 45.1%
Spinning Plates
Have every territory saved at the same time during the Undead Nightmare.
12/2/2010
9:30:05 PM
Ultra Rare 4.0%
Mad Marston: The Trail Warrior
Attain Rank 5 in all Undead Nightmare Challenges.
12/2/2010
8:46:55 PM
Ultra Rare 0.9%