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Change Once, Then Die In the Epilogue, defeat the Shapeshifter with only one shape change.

Bouncing From Here to There Complete the puzzle with rebound in the Epilogue.

Slippery Slope Complete the "Black Ice" Special Ops mission on any difficulty.

The Best Offence is Good Defence Defeat any enemy of the Epilogue by only starting a combo with a Deflect and Counter-Attack.

Leaving the Storm Complete the Epilogue.

Pushing Ahead Gain access to the Compound area in Nightfall in Regular or Hardcore difficulty.

Shotgun Diplomacy Complete the Special Ops mission "Negotiator" on any difficulty.

Specter Intel Collect all intel in the Cooperative campaign.

Weapon Facility Gain access to the Facility in Nightfall in Regular or Hardcore difficulty.

One-Four-One Complete the "Kill Switch" Special Ops mission on any difficulty.

A Baker's Dozen Run over and kill 13 enemies with the snowmobile in the "Black Ice" Special Ops mission.

No Time to Waste Complete the Epilogue in less than 2 hours.

Ice in Your Veins Complete the "Black Ice" Special Ops mission on Veteran difficulty.

The Belly of the Beast Reach the cargo area in Mayday in Regular or Hardcore difficulty.

All the Frescos Reach all Ormazd's Frescos in the Epilogue.

Born Dead Kill all the soldiers of the Epilogue before they spawn.

I Only Need a Hand or Twenty Elika saves you fewer than 20 times in the whole Epilogue.

Don't Tread on Me Complete the "Iron Clad" Special Ops mission on any difficulty.

Stay Frosty Complete the "Arctic Recon" Special Ops mission on any difficulty.

Helipocalypse Destroy 6 helicopters in the "Kill Switch" Special Ops mission.

Survived Nightfall Kill the Breeder for the first time in Nightfall in Regular or Hardcore difficulty.

Phantom Exterminator Kill 5 Phantoms in one game in Nightfall in Regular or Hardcore difficulty.

Skilled Negotiator Complete the Special Ops mission "Negotiator" on Veteran difficulty.

Come Up For Air Reach the top deck in Mayday in Regular or Hardcore difficulty.

Handle with Care Complete the "Special Delivery" Special Ops mission on any difficulty.

Apex Complete the "Vertigo" Special Ops mission on any difficulty.

EMPressive... Complete the "Kill Switch" Special Ops mission on Veteran difficulty.

Not on My Watch Rescue all the hostages in the Special Ops mission "Negotiator."

Not a Scratch Finish with your tank at full health in the "Iron Clad" Special Ops mission.

Siege Complete the "Light 'Em Up" Special Ops mission on any difficulty.

Egg-stra XP! Complete the Egg-Stra XP challenge and then destroy a hive in the Onslaught DLC package.

Deforestation Kill 15 Seeder Turrets in one game in Mayday in Regular or Hardcore difficulty.

Untouchable Use only one self revive care package in the "Special Delivery" Special Ops mission.

dr0n3d Complete the "Arctic Recon" Special Ops mission in under 3:30.

Specter Officer Reach max level with one class in the Cooperative campaign.

High Roller Complete the "Iron Clad" Special Ops mission on Veteran difficulty.

Pea Shooter Kill a Rhino with only a pistol in Nightfall in Regular or Hardcore difficulty.

Deer in the Headlights Stab five stunned enemies in a row in the "Light 'Em Up" Special Ops mission.

Speed Slayer Kill the Breeder in less than 5 minutes in Nightfall in Regular or Hardcore difficulty.

Throttled Survival Kill the Breeder while using a Relic in Nightfall in Regular or Hardcore difficulty.

Salute Me Achieve the rank of Lieutenant.

Sub Zero Complete the "Arctic Recon" Special Ops mission on Veteran difficulty.

Survived Mayday Kill the Kraken for the first time in Mayday in Regular or Hardcore difficulty.

Targets Acquired Get past the first gate in Awakening in Regular or Hardcore difficulty.

Discriminating Buyer Use exactly one of each care package in the "Special Delivery" Special Ops mission.

Postmaster Complete any outpost by activating all of the generators in Regular or Hardcore difficulty.

Undiscovered Truths Find all the intel hidden in Nightfall.

Big Game Trapper Use a hypno trap to turn a Rhino friendly in Mayday in Regular or Hardcore difficulty.

Lights Out Complete the "Light 'Em Up" Special Ops mission on Veteran difficulty.

Egg-stra Devastation! Complete the Egg-Stra XP challenge and then destroy a hive in the Devastation DLC package.