Sierra Hotel
Complete three chapters in a row without being killed or reloading a checkpoint.
7/1/2012
2:13:39 PM
Rare 13.7%
All You Can Be
Complete any chapter with 60%+ accuracy without dying or reloading a checkpoint.
7/1/2012
1:59:15 PM
Ultra Rare 4.3%
Close Combat Carnage
Kill 4 enemies with a shotgun in 10 seconds or less. (campaign only)
7/1/2012
1:43:18 PM
Rare 24.4%
Airspace Control
Kill 10 enemies while they use zip lines or are rappelling. (campaign only)
7/1/2012
1:40:35 PM
Very Rare 9.5%
