No Rest For the Wary
Not unlocked yetKnife an enemy without him ever knowing you were there in Single Player or Special Ops.
Off the Grid
Not unlocked yetComplete 'Just Like Old Times' and 'Endgame' on Veteran Difficulty.
Desperado
Not unlocked yetKill 5 enemies in a row using 5 different weapons or attachments in Single Player or Special Ops.
Operational Asset
Not unlocked yetEarn all 3 stars in at least 5 different Special Op missions.
Operative
Not unlocked yetEarn all 3 stars in at least 10 different Special Op missions.
Out of the Frying Pan…
Not unlocked yetComplete the mission in the airplane graveyard.
Pit Boss
Not unlocked yetRun The Pit in 'S.S.D.D.' and finish with a final time under 30 seconds.
Prisoner #627
Not unlocked yetComplete 'The Only Easy Day... Was Yesterday' and 'The Gulag' on Veteran Difficulty.
Professional
Not unlocked yetEarn all 3 stars in at least 15 different Special Op missions.
Queen takes Rook
Not unlocked yetComplete 'Loose Ends' and 'The Enemy of My Enemy' on Veteran Difficulty.
Red Dawn
Not unlocked yetComplete 'Wolverines!' and 'Exodus' on Veteran Difficulty.
Royale with Cheese
Not unlocked yetDefend Burger Town.
Soap on a Rope
Not unlocked yetStorm the gulag.
Some Like it Hot
Not unlocked yetKill 6 enemies in a row using a thermal weapon in Single Player or Special Ops.
Specialist
Not unlocked yetEarn 30 stars in Special Ops.
Star 69
Not unlocked yetEarn 69 stars in Special Ops.
Tag 'em and bag 'em
Not unlocked yetFind Rojas in the Favelas.
Ten plus foot-mobiles
Not unlocked yetKill at least 10 enemies with one Predator missile in Single Player or Special Ops.
The Harder They Fall
Not unlocked yetKill 2 rappelling enemies in a row before they land on their feet in Single Player or Special Ops.
The Pawn
Not unlocked yetAssault Makarov's safe house.
The Price of War
Not unlocked yetComplete the single player campaign on Hardened or Veteran Difficulty.
The Road Less Traveled
Not unlocked yetCollect 22 enemy intel items.
Three-some
Not unlocked yetKill at least 3 enemies with a single shot from a grenade launcher in Single Player or Special Ops.
Turistas
Not unlocked yetComplete 'Takedown' and 'The Hornet's Nest' on Veteran Difficulty.