Back in the Fight
Start the Single Player Campaign on any difficulty.
12/13/2011
4:41:39 AM
Common 62.2%
Silent but deadly
Kill three guards simultaneously with only throwing knives.
11/24/2011
6:41:02 AM
Rare 23.8%
Down in Smoke
Disorient an enemy with a cloud of smoke from a fire extinguisher
11/14/2011
7:51:17 AM
Rare 16.8%