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Sisters of Athena Endurance Co-op Challenge: Kill a combined total of 25 enemies in a single Expedition

Sisters of Artemis Endurance Co-op Challenge: Kill a combined total of 10 dangerous animals in a single Expedition

One Thousand Suns Complete the Supreme Hybrid Boss Battle.

Finish Him? Perform any fighter's hidden finishing move

In The Web Consume 50 Web Targets.

In Plain Sight Evade 10 strike teams.

We Will Survive Win 15 matches in Team Survivors.

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

Speed Bumps Run over 500 characters in a single tank.

For the Night is Dark Endurance Co-op Challenge: Clear 3 Enemy Camps at night in a single expedition

Campaign Gold Obtain all 108 medals on the original Arkham City campaigns (as Batman)

Teamwork Endurance Co-op Challenge: Warm up from freezing by standing next to a campfire lit by your partner

Communication Skills Endurance Co-op Challenge: Kill 5 enemies that have been marked by your partner

Perfect Knight - Day 2 Complete every challenge in Arkham City - Main Story, Side Missions, Upgrades, Collectables, New Game Plus and Riddler's Revenge (as Batman)

It's Him! Patsy 5 military personnel.

Alone Time Endurance Co-op Challenge: Spend at least one day more than 60 meters apart

"Teamwork" Endurance Co-op Challenge: Collect an Artifact while your partner is down

Misconception Destroy 25 Infected Water Towers before they hatch.

Undertaker Unlock 50% of the Krypt

Get Away from Her! Endurance Co-op Challenge: Kill an enemy melee attacking your partner

Platinum Congratulations!

No One Left Behind Endurance Co-op Challenge: Revive a player 3 times in a single expedition

Threat Elevated Destroy 25 strike teams.

Skillful Raider Endurance Challenge: Open 5 Codices or Sarcophagi without getting caught in a trap

Complet-ality Perform 1 of each type of "-ality"

Infiltrator Infiltrate 10 Military Bases disguised as a Commander.

Bomb Squad Defuse all bombs in 3 minutes or less

A Few New Tricks Use 5 different Quickfire gadgets in one fight as Robin in Harley Quinn's Revenge

Master and Apprentice Endurance Co-op Challenge: Escape the forest after surviving 10 days with at least 20 Artifacts

Wrecking Yard Destroy 2,000 vehicles.

Invincible Defeat Ustanak without anyone on your team being captured.

Easy Pickings Eliminate all players as Ustanak in less than a minute.

Cleanup Kill 15 characters with a single Whipfist attack.

Adventure Besties Endurance Co-op Challenge: Escape the forest with 5 Medium and Large Artifacts

Robots Rule! Win Arcade Tag Ladder with robot Sektor and Cyrax

Held Captive Defeat Ustanak with only one Agent remaining.

Killer Combo Achieve a 30-combo chain.

Experienced Driver Drove for a total of 62.5 miles (approx. 100km)

Surface-To-Air Shoot down 50 helicopters while driving armor.

Snap To It Snap Flash an unarmed thug, an armed thug, an environmental object and a Titan

Organic Shield Kill 5 enemies while using a zombie as a shield.

Last Man Standing--Again Win five times in a row.

Kung Fu Fighting Survive to the end only using physical attacks.

Return Fire Catch any object tossed by a Hydra; and throw it back.

My First Car Bought your first car

Gunning Destroy 20 Helicopters in a single Helicopter flight.

Team Effort Win without any members of your team being killed.

The Loyalists Follow orders and defeat all liabilities.

Take the Stage Defeat your opponent and achieve victory in 3 stages.

Kill or Be Killed Win while in the dying state.