The Ghost Killer

Confront Rorke (Complete "The Ghost Killer" on any difficulty.)

Loki

Commandeer the enemy space station. (Complete "Loki" on any difficulty.)

Severed Ties

Destroy the Federation's satellite array. (Complete "Severed Ties" on any difficulty.)

Fly-by-wire

Take out 3 out of 3 helicopters with the remote missile.

All or nothing

Gather the troops. (Complete "All or Nothing" on any difficulty.)

Sin City

Plan your next move. (Complete "Sin City" on any difficulty.)

End of the Line

Storm the factory (Complete "End of the Line" on any difficulty.)

Into the Deep

Destroy the enemy ship (Complete "Into The Deep" on any difficulty.)

Atlas Falls

Distract the Federation Fleet. (Complete "Atlas Falls" on any difficulty.)

Grindin'

Blow the pressure valves on your first attempt.

Clockwork

Hack the system (Complete "Clockwork" on any difficulty.)

Deep Freeze

Drop 8 vehicles into ice holes.

The Hunted

Make it out alive (Complete "The Hunted" on any difficulty.)

Birds of Prey

Capture Rorke (Complete "Birds of Prey" on any difficulty.)

Federation Day

Gather intel on Rorke. (Complete "Federation Day" on any difficulty.)

Carbon Faceprint

Catch the photocopier with your face.

Legends Never Die

Hunt down Almagro. (Complete "Legends Never Die" on any difficulty.)

Homecoming

Defend LA. (Complete "Homecoming" on any difficulty.)

Go Ugly Early

A-10 strafe 50 enemies.

Struck Down

Find Ajax. (Complete "Struck Down" on any difficulty.)

Survived Nightfall

Kill the Breeder for the first time in Nightfall in Regular or Hardcore difficulty.

Egg-stra XP!

Complete the Egg-Stra XP challenge and then destroy a hive in the Onslaught DLC package.

Phantom Exterminator

Kill 5 Phantoms in one game in Nightfall in Regular or Hardcore difficulty.

Weapon Facility

Gain access to the Facility in Nightfall in Regular or Hardcore difficulty.

Pushing Ahead

Gain access to the Compound area in Nightfall in Regular or Hardcore difficulty.

No Man's Land

Make it to San Diego. (Complete "No Man's Land" on any difficulty.)

Brave New World

Rendez-vous in Fort Santa Monica. (Complete "Brave New World" on any difficulty.)

Liberty Wall

Take down both attack helicopters in Brave New World.

Ghost Stories

Escape. (Complete "Ghost Stories" on any difficulty.)

Spatial Awareness

Kill your first enemy in the Call of Duty® Ghosts campaign.

Cabin Fever

Make it to the cabin in Regular or Hardcore difficulty.

City Dweller

Made it to the city in Regular or Hardcore difficulty.