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You know you're REALLY Insane, right? Complete the entire main campaign on Authentic Plus difficulty

Big Game Trapper Use a hypno trap to turn a Rhino friendly in Mayday in Regular or Hardcore difficulty.

Wishing for the Best Complete the "Last Wish" Raid.

Burgertown Escort Service Rescue 1 survivor in Infection.

A Time of Wood and Stone Gathered the lost lore of Cadash Thaig ("Witch Hunt" downloadable content)

Exposed Remove all of King Cepheus's shields.

Making mountains out of molehills Kill 100,000 enemies.

Lights Out Complete the "Light 'Em Up" Special Ops mission on Veteran difficulty.

I Got This In The Darkest Shore, survive the initial beach rush without using any machine gun turrets.

A Chance Encounter Completed Mission 07 in campaign mode.

Legendary Hero Reach Reputation 5 with any Hero.

Come On And ... Slam 10 zombies at once in Outbreak.

Let's Heat Things Up! Activate your Boost Gems 100 times.

King of the Dead As Black Panther, land a 3-player KO streak in the Intergalactic Empire of Wakanda: Hall of Djalia.

Mountain legend Complete 30 MOUNTAIN STORIES in Alps

Better than the Best Complete the entire campaign on Authentic Plus difficulty with no manual saves

Egg-stra Devastation! Complete the Egg-Stra XP challenge and then destroy a hive in the Devastation DLC package.

I came in like a Resogun Accumulate a total Wrecking combo of 1,000 in Demolition mode

Deliver This Complete the "Special Delivery" Special Ops mission on Veteran difficulty.

Falcon and the Snowman Complete Crime and Punishment in Single Player.

Two for One Complete Crime and Punishment in Multiplayer.

Bookwyrm This is proof that you've become quite familiar with the Library. How to obtain this is kind of a secret, but if you take the time to do a bit of reading now and then, you should be pleasantly surprised.

The First One is the Hardest Get your first 1,000,000+ combo

Fruits of Labor Go into Training mode 10 times.

Perfect Date Finish a level without taking damage.

I Challenge You to a Duel Complete a Medieval level using only Lou Don Jim

Flyswatter Destroy all helicopters in the "Vertigo" Special Ops mission.

Green Series clear Get a silver medal on every green track

Artful extraction Absorb your third Boss Stem Cell

Donut Mess with a Cop Unlock Officer Dick.

Touch Down Land the plane 10 times without crashing (no auto land)

Heads Up! Kill 25 Heroes by attacking them from above in PvP.

The Spice of Life Use three different types of Yamato weapons in a boss fight.

The Boss Beats A Boss Defeat a boss using only President of Sony Computer Entertainment Worldwide Studios Shuhei Yoshida

Street Fighter Complete all Dragon's Teeth Assignments

Avenged Confronted the culprit behind the Vael family's murder. ("The Exiled Prince" downloadable content)

Memento Gave Sebastian a family heirloom. ("The Exiled Prince" downloadable content)

Finished, without fear. Finish the game with two Boss Stem Cells active

Wait... Wha...?! Kill a plane with an enemy plane

Alright, Alright Survive until round 10 in Infection.

A Bridge To Somewhere Extend the bridge in Awakening in Regular or Hardcore difficulty.

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

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

Barrel of laughs Kill 20 enemies with barrels

Chatterbox Sometimes, after you've found a discovery point or when you're at a save point, you have the opportunity to press L3 to initiate a conversation between your companions. This is proof that you've experienced many Things and had a lot of Opinions about them.

Survivor Survive until Round 25 in Outbreak.

Entrapment Kill 20 enemies with security guns in a single level.

Going to the Vet Earn the "Veteran" Challenge Collection.
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PC Load Letter Use the 3D printer 15 times in a single match in Outbreak.

Pinnacle Complete the "Vertigo" Special Ops mission on Veteran difficulty.