Here is the full list of all 40 Call of Duty: Ghosts achievements. It takes around 8-10 hours to unlock all of the achievements on Windows.
Find Ajax. (Complete "Struck Down" on any difficulty.)
Make it to San Diego. (Complete "No Man's Land" on any difficulty.)
Rendez-vous in Fort Santa Monica. (Complete "Brave New World" on any difficulty.)
Take down both attack helicopters in Brave New World.
Escape. (Complete "Ghost Stories" on any difficulty.)
Kill your first enemy in the Call of Duty® Ghosts campaign.
Pounce on 10 enemies whilst controlling Riley.
Every shot with the remote sniper kills a person or vehicle.
Defend LA. (Complete "Homecoming" on any difficulty.)
A-10 strafe 50 enemies.
Hunt down Almagro. (Complete "Legends Never Die" on any difficulty.)
Kill 6 enemies with the knife while underwater in "Legends Never Die".
Gather intel on Rorke. (Complete "Federation Day" on any difficulty.)
Kill sleeping enemy in face down rappel section
Catch the photocopier with your face.
Capture Rorke (Complete "Birds of Prey" on any difficulty.)
Destroy 80 fuel containers.
Make it out alive (Complete "The Hunted" on any difficulty.)
Finish the mission without breaking stealth.
Hack the system (Complete "Clockwork" on any difficulty.)
Drop 8 vehicles into ice holes.
Distract the Federation Fleet. (Complete "Atlas Falls" on any difficulty.)
Blow the pressure valves on your first attempt.
Storm the common room and kill everyone without taking damage on Veteran.
Destroy the enemy ship (Complete "Into The Deep" on any difficulty.)
Take down the LCS on the first go.
Storm the factory (Complete "End of the Line" on any difficulty.)
Kill 5 enemies without being detected before infiltrating Black Zone.
Plan your next move. (Complete "Sin City" on any difficulty.)
Destroy 21 slot machines.
Gather the troops. (Complete "All or Nothing" on any difficulty.)
Cut a grappling hook rope with an enemy on it.
Destroy the Federation's satellite array. (Complete "Severed Ties" on any difficulty.)
Take out 3 out of 3 helicopters with the remote missile.
Commandeer the enemy space station. (Complete "Loki" on any difficulty.)
Destroy all enemy ground targets and kill no allies with the rods.
Confront Rorke (Complete "The Ghost Killer" on any difficulty.)
Shoot the grapple guys off the side of the train.
Collect all 18 Rorke files.
Earn the mask. Finish the campaign on Veteran.