MechaFlash

Not One Inch In Gorod Krovi, complete a Lockdown Event.

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

The River Complete "The River" challenge

Chapter 9 Speedrun Complete a Speedrun of Chapter 9 below the target time.

The Spider's shadow Complete a Noir level without triggering an alarm

Rewards of Good Performance Collect a figurine from any teacher.

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 Test of Reflex Play the 1st Junior Yr. teacher's special game.

Tourist Viewed all vistas

They Are Looking This ones totally a secret but you'll know it when you see it so hustle and look sharp

Sack the Postman Post all 6 invitations for the party.

Two Enemies One Kick Send 2 enemies flying with one kick using Tyrone's Power Kick.

LEGACY Complete all recordings

Upping the Ante Kill the Kraken using a Relic in Mayday in Regular or Hardcore difficulty.

Free From All The Scars Save both Weronikas.

You Never Give Up Finish the game in the NG+.

Diligence as a goal Get 3 stamps in any arena challenge.

Iron and Blood Fight back an ambush.

Over the Edge Unlock all other trophies

Worst Nightmare Master the Worst Nightmare Dark Knight track

Hat Trick Kill 3 aliens with a single shot from the NX-1 Disruptor in Regular or Hardcore difficulty.

Sanguine Serum In Zetsubou No Shima, drink fresh Widow's Wine.

All in Good Fun Play 20 minigames.

The circle is now complete Get to Rank 100

Don't Stop Believing Team up the character from Journey... with the character from Journey

Dog Fight Kill a Gargoyle with the Vanguard in Awakening in Regular or Hardcore difficulty.

Eggstra Nemesis! Complete the Egg-Stra XP challenge and then activate a generator in the Nemesis DLC package.

Does This Spark Joy? Shock 3 enemies at once with landmines using Martin's Makeshift Mine - Shock.

Mass Exodus Complete the final Ancestor encounter in Regular or Hardcore difficulty.

Shell Not Compromised Finish the game in the Hard Mode.

Muppet Mastery Complete The Muppet pack's story

Gotta Get That Boom Boom Boom Use explosive-type weapons to kill 3 enemies at once.

Let it Snow Receive the Extreme Environment Suit (XE Suit)

The Traveler You collected all the Trophies.

Kneel Before Your Queen Kill 5 enemies in a single match while using Becca's Sentry Stance.

The Architect Successfully build all of the Schematics in Mayday in Regular or Hardcore difficulty.

Domination Complete 10 different chapters in co-op (on any difficulty)
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Not Your Average Monkey Meet the 1st Senior Yr. teacher.

Mayday Completionist Complete all Challenges and kill the Kraken in Mayday in Regular or Hardcore difficulty.

Legend of the Dark Knight Complete all Dark Knight challenges

Subjügator Won 10 match-made multiplayer battles.

Spelunker Find all of the Intel in Awakening.

Collector Extraordinaire Collect 100% of the Prize Bubbles in The Journey Home.

Drilling for Justice Assemble the cryonucleation tunneller - the cryodrill

Inquisitive Mind Find all of the Intel in Mayday.

Stranger Tides Escape from the Khepi Tomb

Keep Fighting Killed your first Biobot!

Legen-Dairy Earn the "Legend" Challenge Collection.
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Serpent Savior Freed all 120 Bound Serpents