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Two's Company, Four's a Party Complete any Adventure level with 4 players.

Outsourced Investigator Complete "Old Capital Metro: Edge" in Hollow Zero for the first time.

He knows what they did last era Found all eight audio notes in the Ancient Labyrinth

I kill dead people Killed 40 ghosts in the Ancient Labyrinth

You're Not Worthy As My Opponent Breach: Send 3 Challenges.

Return to Rightful Owner Help the two Public Security officers retrieve the evidence.

Honorary Member Reach Isle of Sgàil Mastery Level 20.

Honor-Bound Recover 22 COG tags (on any difficulty)
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That Party was Ace Ace every Adventure level in The Journey Home.

Nightwing Revenge Obtain 78 medals on the original Arkham City and Nightwing Bundle Pack ranked maps (as Nightwing)

Robin Revenge Obtain 78 medals on the original Arkham City and Robin Bundle Pack ranked maps (as Robin)

Don't burn yourself out Defeated the Keeper

Untouchable Complete SAM'S STORY on Normal or higher difficulty without dying in Batwing encounters.

Avid Collector Reach Lv. 40 with a W-Engine for the first time.

Tailor-made Chose a perfectly fitting armor

A Professional Team at Your Service Establish a cooperation with Victoria Housekeeping Co.

AMG Completionist Gain all stars in 'AMG'.

Views From the Abyss STU: Complete "The Spider's Thread" mode.

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

Sack the Postman Post all 6 invitations for the party.

Go Figure Plant ShadowChild's figurine.

Generate Power With Power Restore power to the Ballet Twins.

Help Desk Get the Blade lobby desk clerk to help you bypass security.

Real men don't need a map Just in case you picked up a shielding map

Extreme Operation Eliminate all obstacles and save the airship.

Melody of Fate Find out the actual name of the monster — Sacrifice — from what remains of the recording.

Extract The Data... Get the data that Pritchard is after from within the Palisade Blade.

Expose The Truth! Decide what to do with the evidence you uncovered.

Detective New Eridu Collect 200 Observation Data.

Psychological warfare Manipulated the Keeper's magic schools

Muppet Mastery Complete The Muppet pack's story

Dom-curious Complete 1 co-op chapter in co-op (on any difficulty)

A Great Manager Reach Lv. 6 with the Random Play video store.

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

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

Respect for the dead Plundered all four resting places

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

Big Top! Achieve a score of 2500 or higher in "Gonzo's Endless Cannon Run Ride!"

Gimme Some Skin Play one Versus Match with a Custom Weapon Skin

Catalog Conqueror STU: Complete all nekomata jobs in "The Spider's Thread" mode.

Murder He Wrote Find all pieces of evidence behind the Saridakis murder.

An Adept Student Requires a Brilliant Teacher Complete the Nekomata Agent Story.

Played with fire Defeated the Keeper after changing his initial magic school to the fire type

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

Perfect Escape In a public match, as a survivor, complete with at least 5000 blood points in each score category.

Enough Coin to Disappear You survived The Brigmore Witches in low chaos with 10,000 coins

All in Find the Morenia

gnilB fo gniK Earn ALL N. Verted Gems

Reunion Visit another Player's Base

No More Marching Killed all the mascots of the Popcorn Parade