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