EkoJack

8-hit wonder Perform 40 8-hit Combos

Get Rich or Die Trying Have $50,000 current balance in a Special Ops Survival game.

General of the Army Enter Prestige 1 in Multiplayer while playing online.

A Mystery, Solved Solve the mystery of Leonora Johnson.

Got 'Em Destroy all Mr. Raccoons hidden in The Ghost Survivors mode.

Bat Out of Hell Complete every Batcycle time trial

Leader of the pack Beat a Mourner without beating its supporting sidekicks

The night is dark Kill 12 enemies without getting detected.

Shielded from Harm Purchase all Shield Upgrades.

Anarchy in the UK Turn a district to hostile status

Master Conductor - Electrocute 3 Helghast Electrocute 3 Helghast with a single burst from the VC5 Electricity Gun

Fighting Fit Purchase all Combat Upgrades.

Drone You Out Defeat 30 Regulator Drone Masters

Bronze Revenge Obtain 24 medals on the original Arkham City ranked maps (as Batman)

Radio Silence Complete the game without using the radio.

Exo Survivor Successfully complete the Exo Survival Bonus Wave.

Dynamic Duo Play a level in co-op

Out of Their League Defeat 45 League of Shadows Assassins and 30 Rocketeers

Dropping L-Bombs Trigger two Logic Bombs in less than 15 seconds

The Phantom Menace Complete ''Episode I - The Phantom Menace''

Full Circle Completed the Solo Story

Only a Real Master Beat an opponent while they still have 90% health and you have 10% or less health remaining

Never Saw It Coming While invisible, used Peeping Tom to knock out 15 enemies with a melee attack.

Liberty City Minute You finished the story in less than 30 hours.

Chapter VI Leave the Refectory with the Butcher's key

Score a Boost Chain of x3 in the GT Nighthawk Awarded for achieving a Boost Chain of x3 driving the GT Nighthawk

Inertial Distance In Campaign, wall run over 250 meters.

Four Honor Unlock 4 Classes.

I AM the Batman! Reclaim your city.

Chain Reaction Damaged fifteen foes with an exploding enemy, using the Radar Range in Burial at Sea - Episode 1.

DLC: Mars: Slimy Death Hit 10 Arachnids with Crabmones.

Double Trouble - Reach the river in Co-op Made it to the Corinth River in Co-op mode

Sands of Time Play the game for over 10 hours

Unlife is strange Save this poor plant with water

You Swine Beat Pigsy to the top of the Decaying Titan.

Exo Survival Veteran Play 50 Exo Survival Matches.

Double Punch Kill 25 shielded enemies with a Stun Blast then Plasma Blast combo.

Tough as They Come Purchase all Health Upgrades.

The Sampler Platter Kill a Necromorph with every Weapon in the game (single player only).

A Momentum Occasion Unlock all Momentum Abilities as Batgirl, Robin, Nightwing, or Red Hood

Vicious Circle Reach the "Maria" ending.

Practice Makes Perfect Complete all 16 Training Area exercises

Courier Service You completed all 10 package delivery jobs.

Unbreakable Will Collect 30 Pieces of Adamantine

Get Your Right Foot Wet Complete a match in Competitive Co-Op mode. (Online co-op only)

Bird watching Kill an helicopter's pilot with any weapon.

Community Outreach Save 15 Humans

Be gentle with her Elika saves you fewer than 100 times in the whole game.

Chapter VII Survive the encounter with Laura

I suggest a new strategy Use a partner's Star Card hand 10 times (Multiplayer)