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Undiscovered Truths Find all the intel hidden in Nightfall.

Postmaster Complete any outpost by activating all of the generators in Regular or Hardcore difficulty.

Hot Pants Complete I Now Know Why You Cry

Sébastien Loeb Rally Challenge Complete the "Sébastien Loeb Rally Challenge" Special Event.

A Can Of Worms Play Trial of the Worm for the first time.

Torque Completionist Gain all stars in 'Torque'.

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

Save the Poet Complete The Pen and the Sword in Single Player.

Ladies Night Beat an Echo Six Expansion Pack mission with the 3 female characters in your party.

Got Your Back Revive your Co-Op partner 10 times.

I Know a Shortcut In Voyage of Despair, take every fast travel path in a single game

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

Act 2 Cleaner Complete all Act 2 maps on Nightmare difficulty.

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

Gotta Catch'em All Collect all secrets.

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

Oh Yeah!!! Complete Nothing is as it Seems

Pack Addict! Upgrade 5 weapons at the Pack A Punch Machine. (Map Pack 3 only)

Making mountains out of molehills Kill 100,000 enemies.

Not so pretty boy Beat Khan in his One-on-One

Research and Development Upgrade the Rarity of one common vehicle of the HOT WHEELS™ - Batman Expansion.

Acidic Alchemy In IX, Get a kill with the Acid Trap in each of its craftable locations

The third faction Rescue all the Buddies from their respective predicaments

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

Mountain legend Complete 30 MOUNTAIN STORIES in Alps

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

This Is How Hot Dogs Are Made 10 Walkers Killed with Saw Blades in the Logging Camp

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

Artful extraction Absorb your third Boss Stem Cell

Act 4 Cleaner Complete Act 4 on Nightmare difficulty

ARCHIVIST Collect all documents

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

Chapter 6 Speedrun Complete a Speedrun of Chapter 6 below the target time.

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

A Little Pack Here, a Little Punch There In Voyage of Despair, use the Pack-a-Punch at every possible location in a single game

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

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

Two for One Complete Crime and Punishment in Multiplayer.

Heavy Fire Kill a total of 30 enemies with Browning gun.

Supernova Get 3 stars on each of the first 14 Echoes

High Score In Zombie Rush, obtain a Personal Score of 250,000

Barrel of laughs Kill 20 enemies with barrels

Chapter 5 Speedrun Complete a Speedrun of Chapter 5 below the target time.

Brand Equity Complete any manufacturer challenge category.

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

Pinnacle Complete the "Vertigo" Special Ops mission on Veteran 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)

Area of Expertise Complete any gear challenge category.

Act IV Complete Act IV.