Unstoppable
Reach Wave 15 in each mission of Special Ops Survival mode.
1/17/2012
6:24:58 AM
Ultra Rare 1.3%
Survivor
Reach Wave 10 in each mission of Special Ops Survival mode.
1/13/2012
6:46:55 AM
Ultra Rare 1.8%
Get Rich or Die Trying
Have $50,000 current balance in a Special Ops Survival game.
1/5/2012
3:20:07 AM
Ultra Rare 3.3%
Birdie
Kill 2 enemy helicopters without getting hit in a Special Ops Survival game.
1/2/2012
11:39:50 PM
Rare 29.2%
Tactician
Earn 1 star in each mission of Special Ops Mission Mode.
12/30/2011
4:57:28 AM
Ultra Rare 2.3%
50/50
Complete a Special Ops Mission Mode game with the same number of kills as your partner.
12/27/2011
2:44:21 AM
Very Rare 7.1%