Complete 'Cliffhanger' on Veteran difficulty.
Knife an enemy without him ever knowing you were there.
Complete 'S.S.D.D.' and 'Team Player' on Veteran difficulty.
Complete the single player campaign on any difficulty.
Kill 4 enemies with 4 shots during a slow-mo breach.
Complete the mission in the airplane graveyard.
Assault Makarov's safehouse.
Kill 11 enemies using Claymores in 'Loose Ends'.
Take back Whiskey Hotel.
Execute the plan to help the Americans.
Kill 5 enemies in a row using 5 different weapons or attachments.
Storm the gulag.
Instruct the Honey Badger to kill 80 enemies in 'Exodus'.
Kill 2 rappelling enemies in a row before they land on their feet.
Kill 7 chickens in under 10 seconds in 'The Hornet's Nest'.
Defend Burger Town.
Kill at least 10 enemies with one Predator Missile.
Kill 6 enemies in a row using a thermal weapon.
Find Rojas in the Favelas.
Kill 2 enemies with a single bullet.
Use a Riot shield to beat down an enemy.
Infiltrate the snowy mountain side base.
Get hand picked for Shepherd's elite squad.
Kill at least 3 enemies with a single shot from a grenade launcher.
Help train the local militia.
Complete the single player campaign on Hardened or Veteran difficulty.
Complete 'Takedown' and 'The Hornet's Nest' on Veteran difficulty.
Complete 'Wolverines!' and 'Exodus' on Veteran difficulty.
Complete 'The Only Easy Day... Was Yesterday' and 'The Gulag' on Veteran difficulty.
Complete 'Contingency' on Veteran difficulty.
Complete 'Of Their Own Accord', 'Second Sun', and 'Whiskey Hotel' on Veteran difficulty.
Complete 'Loose Ends' and 'The Enemy of My Enemy' on Veteran difficulty.
Complete 'Just Like Old Times' and 'Endgame' on Veteran difficulty.
Run The Pit in 'S.S.D.D.' and finish with a final time under 30 seconds.
Plant the C4 in 'Cliffhanger' without alerting or injuring anyone in the blizzard.
Collect 22 enemy intel items.
Collect 45 enemy intel items.
Kill 20 enemies in a row while driving a vehicle.
Kill 10 enemies in a row using akimbo weapons.
Do not get your Predator Drone destroyed in 'Contingency'.
Ring the red bell in both rooms and survive the attack.
Beat BX time in 'S.S.D.D.'.
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!'
Destroy 10 choppers using the Javelin Launcher in 'Of Their Own Accord'.
Destroy the helicopter using frag grenades in 'The Only Easy Day... Was Yesterday'.
Kill an enemy with the impact damage from a frag grenade to the head.
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