Knock-knock

Kill 4 enemies with 4 shots during a slow-mo breach in Single Player or Special Ops.

Some Like it Hot

Kill 6 enemies in a row using a thermal weapon in Single Player or Special Ops.

I'm the Juggernaut…

Kill a Juggernaut in Special Ops.

It Goes to Eleven

Earn at least 1 star in 11 different Special Op missions.

Specialist

Earn 30 stars in Special Ops.

Operative

Earn all 3 stars in at least 10 different Special Op missions.

Blackjack

Earn 21 stars in Special Ops.

Operational Asset

Earn all 3 stars in at least 5 different Special Op missions.

The Harder They Fall

Kill 2 rappelling enemies in a row before they land on their feet in Single Player or Special Ops.

Charlie On Our Six

Earn 8 stars in Special Ops.

Hotel Bravo

Earn 4 stars in Special Ops.

Desperado

Kill 5 enemies in a row using 5 different weapons or attachments in Single Player or Special Ops.

Ten plus foot-mobiles

Kill at least 10 enemies with one Predator missile in Single Player or Special Ops.

Gold Star

Earn 1 star in Special Ops.

Unnecessary Roughness

Use a riot shield to beat down an enemy in Single Player or Special Ops.

Black Diamond

Complete 'Cliffhanger' on Veteran Difficulty.

Cold Shoulder

Infiltrate the snowy mountain side base.

Two Birds with One Stone

Kill 2 enemies with a single bullet in Single Player or Special Ops.

No Rest For the Wary

Knife an enemy without him ever knowing you were there in Single Player or Special Ops.

First Day of School

Complete 'S.S.D.D' and 'Team Player' on Veteran Difficulty.

Danger Close

Get hand picked for Shepherd's elite squad.

Three-some

Kill at least 3 enemies with a single shot from a grenade launcher in Single Player or Special Ops.

Back in the Saddle

Help train the local militia.

Professional

Earn all 3 stars in at least 15 different Special Op missions.