TheLowestKey

Death From Above Operate an AC-130 gun ship.

Night Glider Glide continuously for over 100m

Rescue Roycewicz Save Pvt. Roycewicz on the stairs.

Straight Flush Kill 5 enemies with one shot while in the AC-130 gunship.

Roadkill Kill 2 enemies by blowing up a car in the single player campaign.

Down Boy Down Survive a dog attack.

Rope-A-Dope-A-Dope String up one henchman and drop him to surprise a second (any play mode)

Wrong Number Find Al-Asad's safehouse.

Explosion Man Kill 20 enemies with explosives in a single level.

No Rest for the Weary Stab an injured crawling enemy.

Conundrum Cracker Solve 55% of Riddler challenges

Reinforcement Denied Kill at least 3 rappelling enemies in a single rope.

Catch! Catch a Batarang (any play mode)

Piggyback Ride Carry Cpt. MacMillan to safety.

Desperate Measures Corner Zakhaev's Son.

Bigger Bang Complete story mode on Normal difficulty

Win the War Complete the game on any difficulty.

Man of the People Save the farmer.

Three of a Kind Kill 3 enemies in a row with your knife in the single player campaign.

Mental Athlete Solve 70% of Riddler challenges

A taste of everything Kill a zombie with 10 different melee weapons.

Knock, knock Breach a locked door with the first blow.

Ghillies In The Mist Complete 'All Ghillied Up' without alerting any enemies.

Riddle Resolver Solve 85% of Riddler challenges

Look Sharp Find 15 enemy intel items.

The Search Complete 'Charlie Don't Surf' on Veteran difficulty.

Cardio Travel a distance of 20 kilometers on foot.

Mano-A-Mano Defeat Titan henchman without using Batarangs (any play mode)

Feel the Heat Kill all 4 tanks on the overpass with the Javelin missile in 'The Bog'.

Retro Shooter Complete any level without reloading your weapon (excluding 'The Coup' and 'Aftermath').

Karma-geddon Kill 50 zombies using a vehicle.

Master Ninja Complete any level using only the knife to kill enemies.

Crack The E Nigma Solve every riddle on the island

The Escape Complete 'Hunted' and 'Death From Above' on Veteran difficulty.

Bird on the Ground Shoot down an enemy helicopter with an RPG in the single player campaign.

The Bog Complete 'The Bog' and 'War Pig' on Veteran difficulty.

World's Greatest Detective Spirit of Amadeus Arkham revealed

The First Horseman Complete 'Shock and Awe' on Veteran difficulty.

Desert Storm Find the Desert Eagle in 'Crew Expendable' and kill 5 enemies with it.

The Second Horseman Complete 'Safehouse' on Veteran difficulty.

Road Trip Drive a total distance of 10 kilometers.

Time Paradox Kill Makarov and complete your mission

The Man in the High Tower Find and use the hidden cache in 'Heat'.

Fashionista Equip a full matching Gear Set

Hell in paradise Complete act 1.

A Thirst for Knowledge Restore your first memory chip.

Heated Conflict Take out 10 soldiers with active Heat

Dogs. I Hate Dogs. Kill 20 attack dogs with a knife.

Tae Kwon Leap Kill 25 zombies with your bare fists.

Man versus Machine Alert the enemy helicopter in 'All Ghillied Up' and take it down.