Geomason

It's a Trap! Kill at least one zombie with three different traps in a single round. (Map Pack 2 only)

AMG Completionist Gain all stars in 'AMG'.

All out Escape the Morenia

The Ball Complete the second ball puzzle in Sector 7

Egg-stra Awakening! Complete the Egg-Stra XP challenge and then scan an obelisk in the Invasion DLC package.

Endangered Lizards Killed all shining lizards

Spidery Point Destroy the Spider Boss on Arachnophobia, without destroying any of its mini guns.

King of Bling Earn ALL of the Clear Gems

Sector 7, Completed Complete Sector 7

Fizzicks Complete the final physics puzzle

Finale Complete Q.U.B.E.

Nightfall Completionist Complete all challenges and kill the Breeder in Nightfall in Regular or Hardcore difficulty.

Sack the Postman Post all 6 invitations for the party.

Climber Reached top of the shrine

Reich To The Point Wolf Mountain - Kill only Hitler and exfiltrate.

Going Up… In The Darkest Shore, unlock the Ubersprengen.

Weapons Don't Grow on Trees Break 3 melee weapons in a single match.

Not My First Rodeo Ride a friendly Agency drone for 1,000 meters, without getting off it

Take your own advice Save Aksali Noll

Shard Snatchers Complete Episode 2.

Just Take the Pod Complete all New Horizon Expeditions.
1/4

Constellation Prize In IX, kill 9 zombies with a single uncharged shot from the Death of Orion

Push Me To Completion Push the ball in the hidden area in Sector 5 down the hallway

Turnabout is Fair Play Kill 50 Cryptids with the Venom-X weapon in Nightfall in Regular or Hardcore difficulty.

Tier One In a group of 4 finish an Operation on Challenge with 5 directives enabled.

Birth of An Abomination Complete Root of All Evil

Not a chicken! Clear 10 secondary missions.
"You mission freak!"

Complete My Secret 3 Complete the hidden puzzle in Sector 6

Ballard's Crossing Complete mission 5: "Ballard's Crossing"

Campaign Wonder Obtain 114 medals on the original Arkham City and Robin Bundle Pack campaigns (as Robin)

Campaign Nightwing Obtain 114 medals on the original Arkham City and Nightwing Bundle Pack campaigns (as Nightwing)

A moon in your hand Retrieve the map to Okala V

Battle Brother Get a Multiplayer character to Lvl 10.

Match Made in Hell In Blood of the Dead, complete a Gondola ride with the Warden

I am death incarnate! Beat the game on "I am death incarnate!" difficulty or higher

Clean Sweep Complete the System Rift Jensen Story without killing anyone.

Leave no Dead Man Behind Kill every zombie in the Park before leaving.

Derailed Complete The Places We’re Meant to Die

A Just Cause Decide what to do with the Altered Biocell.

Mighty Wander Max out stamina bar

Covert Elimination Wolf Mountain - Kill Hitler and exfiltrate without ever being detected.

Team Player In Zombie Rush, obtain a Team Score of 500,000

Rough Rider Destroy 15 vehicles during a single challenge

Drone Joust Defeat an Agent riding an Agency drone while riding an Agency drone yourself

Insert Coin Complete all achievements in one game from The Arcade.

Two Birds Smack a bomb so that kills two or more enemies (Individual)

Overachiever Watch the 100% bonus ending

gnilB fo gniK Earn ALL N. Verted Gems

Tank Sympathizer Destroy both generators on Claustrophobia without killing a Tank.

Enter the Hall Reach the Carnage Hall