Psyfonix

Babysitter - Revive 25 Buddies Revive your buddies a total of 25 times

Finish Him You completed 10 melee counters in 4 minutes.

Overachiever Earn 48 stars in Special Ops Mission Mode.

Gunslinger Assassinate General Amsel with a pistol shot. (Solo only)

Time for Pints Finish the Campaign on any difficulty.

Strength of the Pack Complete a Strike with a full fireteam consisting of only your clan members.

Blue Ribbon Complete a 4-player Competitive Co-Op match in 1st place. (Online co-op Only)

Iron Fist Destroy all towers and bunkers in 'Blood and Iron'.

Liberty City (5) Your friends all like you above 90%.

Crocodile Shoot three enemies while underwater in 'Wetwork'.

You Know Nothing Kill Kotch before his speech ends.

Grave Robber Collect all Death Cards in the game. (Solo only)

One Bad Gato Complete 'Blackcats' on Veteran difficulty. (Solo only)

New Shadow In 'The Savior', complete the mission without being spotted

All In Earn all available Trophies for Modern Warfare® 3.

Ruthless Kill 15 enemies while mounted on a tank in 'Ring of Steel'.

Scorched Earth Complete 'Burn 'em Out' on Veteran difficulty. (Solo only)

Combo Specialist Find every combo in the game.

Nobody was There Never trigger the alarm in 'Recon by Fire'.

Master Unlock all trophies.

Gatherer Find 50% of the collectibles in the campaign

Ghost Hunter Discover 50 dead ghosts.

Hell on Wheels Complete 'Blood and Iron' on Veteran difficulty. (Solo only)

Outsmarted In singleplayer, get a quadruple kill with a single Frag Grenade

TLAD: The Lost Boy Become leader of The Lost. (The Lost and Damned)

Top Of The Food Chain You successfully killed 20 players with a pistol in a deathmatch.

Fragmerchant - Kill 5 Helghast using a single grenade Kill 5 Helghast at once using a single frag grenade

Wall of Duty Kill three Enemies with the Riot Shield in the Campaign or in Co-op.

Join The Midnight Club You won a multiplayer race without damaging your vehicle too much.

You Got The Message You delivered all 30 cars ordered through text message.

A Crappy Way to Die Kill the enemy in the porta-potty.

Daredevil While affected by one Flashbang, kill two enemies in the Campaign or in Co-op.

C12 Kill a C12 by doing a right rodeo, a left rodeo and by blowing off multiple limbs.

No More Strangers You've met all the random characters.

Treadhead - Kill 30 Helghast whilst in the tank Take 30 Helghast lives whilst using the ISA tank

No Return Complete 'Ring of Steel' on Veteran difficulty. (Solo only)

Gunless Finish 'Alone' without firing a gun.

"When It Rains, It Pours" Complete 'Eviction' on Veteran difficulty. (Solo only)

Undertaker - Kill 1000 Helghast Kill 1000 Helghast soldiers

Ghost-in-Training Reach the penthouse in 'El Sin Nombre' without killing anyone or triggering the alarm.

Nessie Reach the barge without being seen in 'Wetwork'.

Conscientious Killer Complete the campaign on any difficulty without shooting any civilians

Fearless Complete 'Relentless' on Veteran difficulty. (Solo only)

Teamplayer You killed 5 opposing team members.

Hardened War Hero Complete the game on Hardened or Veteran difficulty. (Solo only)

Genetically Superior You came first in 20 singleplayer street races.

Must be Wind Rescue the hostages in 'Countdown' without the enemies firing their weapons.

Test Drive Drive five vehicle types in 'Violence and Timing'.

Keeping this One Reach Price using the first vehicle you hijack.

Sunbreaker Complete "The Sunbreakers' Challenge" quest.