Special Effects!
Turn the effects dial during every Effects Zone in any mix at any difficulty (not in the tutorial).
3/15/2011
6:23:48 PM
Common 72.5%
Sally Likes Blood
Demonstrate killer economic sensibilities by taking down 3 enemies with a single bullet.
2/27/2011
5:42:15 PM
Rare 34.9%
Raining Pain
Rack up a body count of 20 NVA using air support in Hue City.
2/26/2011
5:50:31 AM
Rare 32.6%
Insert Coin
Access the terminal and battle the forces of the Cosmic Silverback in Dead Ops Arcade.
2/26/2011
4:10:29 AM
Rare 36.9%
Operational Asset
Earn all 3 stars in at least 5 different Special Op missions.
2/20/2011
7:30:23 AM
Very Rare 9.7%
Eye of the Needle
As a Racer, drive through an undamaged Road Block without hitting it
1/22/2011
10:30:02 PM
Common 53.0%
Burnout
Fill the Nitrous bar then use it all in one go without hitting anything
1/21/2011
10:38:51 PM
Common 85.7%