Kill 3 enemies in a row with your knife in the single player campaign
Stab an injured crawling enemy
Complete the game on Hardened or Veteran difficulty
Complete 'Heat' and 'The Sins of the Father' on Veteran difficulty
Complete 'Ultimatum', 'All In', and 'No Fighting in the War Room' on Veteran difficulty
Complete 'Game Over' on Veteran difficulty
Complete 'Safehouse' on Veteran difficulty
Complete 'All Ghillied Up' and 'One Shot, One Kill' on Veteran difficulty
Complete 'The Bog' and 'War Pig' on Veteran difficulty
Complete 'Shock and Awe' on Veteran difficulty
Shoot down an enemy helicopter with an RPG in the single player campaign
Complete 'Charlie Don't Surf' on Veteran difficulty
Complete 'Crew Expendable' on Veteran difficulty
Complete 'Blackout' on Veteran difficulty
Complete the game on any difficulty
Kill 4 enemies in a row with headshots in the single player campaign
Infiltrate a cargo ship
Complete 'F.N.G.'
Operate an AC-130 gun ship
Find Al-Asad's safehouse
Carry Cpt. MacMillian to safety
Corner Zakhaev's Son
Survive a dog attack
Save Pvt. Roycewicz on the stairs
Save the farmer
Kill 5 enemies with one shot while in the AC-130 gunship
Complete 'All Ghillied Up' without alerting any enemies
Kill the power
Protect 'War Pig', the Abrams tank
Kill an enemy while blinded by a flashbang in the single player campaign
Kill 2 enemies by blowing up a car in the single player campaign
Find 15 enemy intel items
Find 30 enemy intel items
Complete the cargo ship mockup in less than 20 seconds
Destroy all the TVs showing Al-Asad's speech
Sky dive to safety on Veteran difficulty
Complete 'Hunted' and 'Death From Above' on Veteran difficulty
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