Here is the full list of all 50 Call of Duty: Modern Warfare 2 Campaign Remastered achievements worth 1,000 gamerscore.
Knife an enemy without him ever knowing you were there.
Collect 45 enemy intel items.
Do not get your Predator Drone destroyed in 'Contingency'.
Kill 10 enemies in a row using akimbo weapons.
Destroy the helicopter using frag grenades in 'The Only Easy Day... Was Yesterday'.
Complete the single player campaign on Hardened or Veteran difficulty.
Complete 'Just Like Old Times' and 'Endgame' on Veteran difficulty.
Complete 'Loose Ends' and 'The Enemy of My Enemy' on Veteran difficulty.
Complete 'Of Their Own Accord', 'Second Sun', and 'Whiskey Hotel' on Veteran difficulty.
Complete 'Contingency' on Veteran difficulty.
Complete 'The Only Easy Day... Was Yesterday' and 'The Gulag' on Veteran difficulty.
Kill 4 enemies with 4 shots during a slow-mo breach.
Complete 'Wolverines!' and 'Exodus' on Veteran difficulty.
Instruct the Honey Badger to kill 80 enemies in 'Exodus'.
Kill 2 rappelling enemies in a row before they land on their feet.
Complete 'Takedown' and 'The Hornet's Nest' on Veteran difficulty.
Complete 'Cliffhanger' on Veteran difficulty.
Complete 'S.S.D.D.' and 'Team Player' on Veteran difficulty.
Beat BX time in 'S.S.D.D.'.
Kill Shepherd.
Kill 7 chickens in under 10 seconds in 'The Hornet's Nest'.
Collect 22 enemy intel items.
Plant the C4 in 'Cliffhanger' without alerting or injuring anyone in the blizzard.
Ring the red bell in both rooms and survive the attack.
Complete the single player campaign on any difficulty.
Use a Riot shield to beat down an enemy.
Complete the mission in the airplane graveyard.
Assault Makarov's safehouse.
Take back Whiskey Hotel.
Execute the plan to help the Americans.
Storm the gulag.
Kill 6 enemies in a row using a thermal weapon.
Defend Burger Town.
Kill at least 10 enemies with one Predator Missile.
Find Rojas in the Favelas.
Infiltrate the snowy mountain side base.
Get hand picked for Shepherd's elite squad.
Kill 2 enemies with a single bullet.
Kill 5 enemies in a row using 5 different weapons or attachments.
Kill at least 3 enemies with a single shot from a grenade launcher.
Help train the local militia.
Run The Pit in 'S.S.D.D.' and finish with a final time under 30 seconds.
Kill 20 enemies in a row while driving a vehicle.
Complete any mission but 'S.S.D.D.' and 'Endgame' without reloading weapons or using melee attacks.
Complete every missions without dying or reloading to a checkpoint at any difficulty.
Destroy both BTRs without using Predator Drones in 'Wolverines!'
Kill 11 enemies using Claymores in 'Loose Ends'.
Destroy 10 choppers using the Javelin Launcher in 'Of Their Own Accord'.
The U.S. Army Rangers ain’t no place for clowns.
Kill an enemy with the impact damage from a frag grenade to the head.