Gravity is a Bitch!
Kill 30 enemies by using the grappling hook and making them fall to their death.
4/8/2010
7:37:24 AM
Rare 23.4%
The Basics
Complete one of the missions you receive in the mission log.
4/5/2010
10:42:12 AM
Common 89.1%
Knock-knock
Kill 4 enemies with 4 shots during a slow-mo breach in Single Player or Special Ops.
4/4/2010
5:57:14 PM
Rare 15.2%
Colonel Sanderson
Kill 7 chickens in under 10 seconds in 'The Hornet's Nest'.
3/25/2010
1:25:39 PM
Very Rare 6.8%
