Blow the pressure valves on your first attempt.
Shoot the grapple guys off the side of the train.
Kill sleeping enemy in face down rappel section
Kill 6 enemies with the knife while underwater in "Legends Never Die".
Confront Rorke (Complete "The Ghost Killer" on any difficulty.)
Earn the mask. Finish the campaign on Veteran.
Collect all 18 Rorke files.
Commandeer the enemy space station. (Complete "Loki" on any difficulty.)
Destroy the Federation's satellite array. (Complete "Severed Ties" on any difficulty.)
Take out 3 out of 3 helicopters with the remote missile.
Gather the troops. (Complete "All or Nothing" on any difficulty.)
Cut a grappling hook rope with an enemy on it.
Plan your next move. (Complete "Sin City" on any difficulty.)
Destroy 21 slot machines.
Storm the factory (Complete "End of the Line" on any difficulty.)
Kill 5 enemies without being detected before infiltrating Black Zone.
Destroy the enemy ship (Complete "Into The Deep" on any difficulty.)
Make it to the cabin in Regular or Hardcore difficulty.
Made it to the city in Regular or Hardcore difficulty.
Take down the LCS on the first go.
Distract the Federation Fleet. (Complete "Atlas Falls" on any difficulty.)
Storm the common room and kill everyone without taking damage on Veteran.
Hack the system (Complete "Clockwork" on any difficulty.)
Drop 8 vehicles into ice holes.
Make it out alive (Complete "The Hunted" on any difficulty.)
Finish the mission without breaking stealth.
Capture Rorke (Complete "Birds of Prey" on any difficulty.)
Destroy 80 fuel containers.
Gather intel on Rorke. (Complete "Federation Day" on any difficulty.)
Catch the photocopier with your face.
Every shot with the remote sniper kills a person or vehicle.
Escape. (Complete "Ghost Stories" on any difficulty.)
Kill your first enemy in the Call of Duty Ghosts campaign.
Rendez-vous in Fort Santa Monica. (Complete "Brave New World" on any difficulty.)
Take down both attack helicopters in Brave New World.
Make it to San Diego. (Complete "No Man's Land" on any difficulty.)
Pounce on 10 enemies whilst controlling Riley.
Find Ajax. (Complete "Struck Down" on any difficulty.)
Defend LA. (Complete "Homecoming" on any difficulty.)
A-10 strafe 50 enemies.
Hunt down Almagro. (Complete "Legends Never Die" on any difficulty.)
Destroy all enemy ground targets and kill no allies with the rods.
Escape with all four players in Regular or Hardcore difficulty.
Reach the exfil chopper with 1:30 remaining on the clock in Regular or Hardcore difficulty.
Escape 1st time in Regular or Hardcore difficulty.
Complete all Extinction challenges and escape in Regular or Hardcore difficulty.
Get 50 kills with the electric fence and fire traps in one game in Regular or Hardcore difficulty.
Scavenge 40 items in a single game in Regular or Hardcore difficulty.
Escape using a relic in Regular or Hardcore difficulty.
Finish 20 rounds in Safeguard.
Gain access to the Compound area in Nightfall in Regular or Hardcore difficulty.
Gain access to the Facility in Nightfall in Regular or Hardcore difficulty.
Kill the Breeder for the first time in Nightfall in Regular or Hardcore difficulty.
Kill the Breeder in less than 5 minutes in Nightfall in Regular or Hardcore difficulty.
Kill 50 Cryptids with the Venom-X weapon in Nightfall in Regular or Hardcore difficulty.
Complete all challenges and kill the Breeder in Nightfall in Regular or Hardcore difficulty.
Kill the Breeder while using a Relic in Nightfall in Regular or Hardcore difficulty.
Kill 5 Phantoms in one game in Nightfall in Regular or Hardcore difficulty.
Kill a Rhino with only a pistol in Nightfall in Regular or Hardcore difficulty.
Find all the intel hidden in Nightfall.
Complete the Egg-Stra XP challenge and then destroy a hive in the Onslaught DLC package.
Reach the cargo area in Mayday in Regular or Hardcore difficulty.
Reach the top deck in Mayday in Regular or Hardcore difficulty.
Kill the Kraken for the first time in Mayday in Regular or Hardcore difficulty.
Kill the Kraken using a Relic in Mayday in Regular or Hardcore difficulty.
Complete all Challenges and kill the Kraken in Mayday in Regular or Hardcore difficulty.
Find all of the Intel in Mayday.
Kill 15 Seeder Turrets in one game in Mayday in Regular or Hardcore difficulty.
Use a hypno trap to turn a Rhino friendly in Mayday in Regular or Hardcore difficulty.
Complete the Egg-Stra XP challenge and then destroy a hive in the Devastation DLC package.
Successfully build all of the Schematics in Mayday in Regular or Hardcore difficulty.
Get past the first gate in Awakening in Regular or Hardcore difficulty.
Extend the bridge in Awakening in Regular or Hardcore difficulty.
Escape Awakening for the first time in Regular or Hardcore difficulty.
Escape Awakening using two Relics in Regular or Hardcore difficulty.
Complete all Challenges and escape Awakening in Regular or Hardcore difficulty.
Find all of the Intel in Awakening.
Kill a Gargoyle with the Vanguard in Awakening in Regular or Hardcore difficulty.
Complete the Egg-Stra XP challenge and then scan an obelisk in the Invasion DLC package.
Kill 5 cryptids with the Ark attached to every compatible weapon in Awakening in Regular\Hardcore.
Escape Awakening with each of the four classes in Regular or Hardcore difficulty.
Complete the final Ancestor encounter in Regular or Hardcore difficulty.
Complete the final Ancestor with at least 1 relic in Regular or Hardcore difficulty.
Complete every challenge and the final Ancestor encounter in Regular/Hardcore difficulty.
Find all 7 story related intel files in Exodus.
Complete any outpost by activating all of the generators in Regular or Hardcore difficulty.
Complete the Egg-Stra XP challenge and then activate a generator in the Nemesis DLC package.
Kill the final 3 Ancestors within 10 seconds of killing the first Ancestor in Regular\Hardcore.
Hit an Ancestor with a Hypno Knife in Regular or Hardcore difficulty.
Kill the final Ancestor with a relic active in Hardcore difficulty.
Kill 3 aliens with a single shot from the NX-1 Disruptor in Regular or Hardcore difficulty.
