Spider Assassin
Climb Hagia Sofia, from the ground to the pinnacle, in under 25 seconds.
7/4/2012
1:11:05 PM
Very Rare 8.5%
Gold Master
As a single player, earn Gold or higher on three or more Challenges on a single play of a song (Quickplay+)
6/18/2012
3:56:21 PM
Rare 25.3%
Danger Close
Take down a chopper with an AC-130 smoke grenade in "Bag and Drag."
6/1/2012
9:51:41 PM
Very Rare 8.1%
For Whom the Shell Tolls
Destroy all targets during the mortar sequence with only 4 shells in "Back on the Grid."
6/1/2012
9:43:55 PM
Ultra Rare 4.6%
Flight Attendant
Kill all 5 enemies during the zero-g sequence in "Turbulence."
6/1/2012
9:31:34 PM
Ultra Rare 2.4%
What Goes Up...
Destroy all the choppers with only the UGV's grenade launcher in "Persona Non Grata."
6/1/2012
9:23:47 PM
Ultra Rare 1.6%
This Is My Boomstick
Kill 30 enemies with the XM25 in "Black Tuesday."
6/1/2012
9:10:50 PM
Ultra Rare 3.6%
Unstoppable
Reach Wave 15 in each mission of Special Ops Survival mode.
6/1/2012
12:48:58 PM
Ultra Rare 1.3%
Survivor
Reach Wave 10 in each mission of Special Ops Survival mode.
6/1/2012
12:39:28 PM
Ultra Rare 1.8%
Defense Spending
Buy all items from the Survival Equipment Armory.
5/24/2012
12:23:06 PM
Ultra Rare 2.9%
Get Rich or Die Trying
Have $50,000 current balance in a Special Ops Survival game.
5/19/2012
3:03:20 PM
Ultra Rare 3.3%
Birdie
Kill 2 enemy helicopters without getting hit in a Special Ops Survival game.
5/19/2012
11:58:44 AM
Rare 29.2%
50/50
Complete a Special Ops Mission Mode game with the same number of kills as your partner.
5/17/2012
1:55:35 PM
Very Rare 7.1%
This is the End
Complete "Scorched Earth", "Down the Rabbit Hole", and "Dust to Dust" on Veteran difficulty.
4/25/2012
2:07:32 PM
Ultra Rare 2.3%