GAPADAX

Gatherer Find 50% of the collectibles in the campaign

Heart of Darkness Find all 8 mysterious carillons.

Arkham City Lockdown Defeat every Villain With Batman

Place of Three Deaths Kill Paolo three times

Dead Presidents GTA Online: You completed The Fleeca Job and The Pacific Standard Job as Heist Leader or Crew.

Cursed No More Purify a Cursed piece of gear.

Hell on Wheels Complete 'Blood and Iron' on Veteran difficulty. (Solo only)

The Interceptor Get 20 Killstreaks with Interceptor ships.

Sentry Mode Engaged In multiplayer, defeat 150 enemies with the Heavy's Sentry Gun.

Hippy-Stomper Foot stomp 12 aliens

World's Greatest Detective Complete Batman 75 level with all Minikits unlocked

Why so serious? Complete the Dark Knight level with all Minikits unlocked

Defeated Londra and His Horus Defeated the awakened Horus and put a stop to Londra's plans.

The Gift that Keeps on Giving Experienced all 9 Game Modes and all 9 Modifiers of the Mutator.

Bat-Dancer Complete Batman's special Anniversary Dance Puzzle as Batman (1966)

Troll's Bane Slay the wild snow trolls.

The Local Flavor Completed "The Local Flavor"

He Who Doesn't Exist Defeat the Mysterious Man in Hollow Bastion.

Whispers on the Wind Collect all ECHO logs on Xylourgos.
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Dominion Wraith Flash Dominate 50 Uruks.

Parasite-Seeing In Shadows of Evil, kill 5 Parasites while riding on the train.

Deadly Nightshade Poison Ivy must defeat any opponent with the final hit coming from Kiss of Death

Mission Impossible Complete the game on Zealot setting

Heart Whispers Using the Heart, listen to the secrets of 40 different people

One Step Ahead Batman must defeat any opponent with the final hit coming from Cape Parry or Cape Counter

Undertaker In The Final Reich, kill the Bomber with the shovel.

Flooded Basement Drain the water to recover a Rune

Acrobat Eliminate 10 enemies with Drop Assassination

Location Scout Visit all Locations in Director Mode.

Among the Stars Completed "Among the Stars"

Gnomad Complete GnoMAD

Why Aren't You Laughing? Joker must defeat Batman with the final hit coming from Not So Funny Is It?

Gasoline Cowboy Rescue your allies with the Sherman while keeping your armor above 80% in Collateral Damage.

Yes, Very Subtle In solo play, complete a level without using your Abilities, including rush and melee

Wild Card Completed Wild Card.

Darkseid on the Moon Play as Darkseid on the Moon

Dinner at 8 Guide 8 Sacklings to the very end

Krypto Come Home Play as Krypto in the Man of Steel level

The Commander You unlocked Commander Video! Double rainbow all da way!

Outsmarted In singleplayer, get a quadruple kill with a single Frag Grenade

Walking Death Beat the game on Hard Difficulty

Completionist Complete all Extinction challenges and escape in Regular or Hardcore difficulty.

Throttled Escape Escape using a relic in Regular or Hardcore difficulty.

Campaign Silver Obtain 72 medals on the original Arkham City campaigns (as Batman)

Equipped an Elite Coil or Weave Equipped an elite coil on a weapon or an elite weave on an outfit.

In the belly of the beast Enter the Raid.

Marked for Greatness Seal 75 rifts in a single playthrough.

All the Gears Earn 5 Gears in every Challenge.

Lovers Quarrel Green Arrow must defeat Black Canary with the final hit coming from Target Practice

Rolling Heavy Kill 5 enemies using one burst of Unstoppable Force.