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Leave No Man Behind Rescue the guards and henchman from the Joker toxin in Decontamination

Good Eats Good guys feed the needy.

Daydreamer Survive the nightmare of the Scarecrow's fear gas

Baneful Payback Defeat Bane

Breaking And Entering Gain access to Arkham Mansion after it is locked down by the Joker

Recurring Nightmare Face your biggest fears and keep your sanity

Zsasz Cut Down To Size Save Dr. Young from being killed by Victor Zsasz

Solitary Confinement Capture and lock up Harley Quinn

Lateral Thinker Solve 25% of Riddler challenges

Freeflow Combo 20 Complete a combo of 20 moves (any play mode)

Double Trouble Defeat two Titan Henchmen at once

Resist The Fear Conquer the effects of the Scarecrow's fear gas

100 Headshots Kill 100 Enemies with Headshots

Crocodile Tears Venture into Killer Croc's lair and come out alive

Let eM In Mike allowed Emily to stay in the basement

Freakshow Rodeo Ride Titan henchman and knock down 10 thugs (any play mode)

Poisoned Ivy Defeat the giant Titan Ivy plant

Big Bang Complete story mode on Easy difficulty

Scream Too! Mike cut off his fingers to free himself from the bear trap

30 Kills: MP40 Kill 30 Enemies with the MP40

Charted! - Easy Finish the Game on Easy Without Changing the Difficulty

Mystery Solver Solve 40% of Riddler challenges

The Skilful Wolf Man Mike kept the wolf alive throughout the Sanatorium

Evil Riot Bad guys love starting riots.

Let's gear up Craft every item

50 Kills: 92FS-9mm Kill 50 Enemies with the 92FS - 9mm

No Matter What - Easy Complete the game on Easy

50 Kills: M4 Kill 50 Enemies with the M4

Party Pooper KO all the henchmen celebrating your arrival at the party

Defender Repel 3 Outpost Retaliation Parties (Campaign only).

Bigger Bang Complete story mode on Normal difficulty

Rope-A-Dope-A-Dope String up one henchman and drop him to surprise a second (any play mode)

20 Kills: Wes - 44 Kill 20 Enemies with the Wes - 44

You Let The Wrong One In! Ashley or Chris opened the trap door and let the monster in

Charted! - Normal Finish the Game on Normal Without Changing the Difficulty

Don't Scare Jessica To Death Jessica survived her night of terror

Arkham City Sirens Drop in on an old friend

Earn a Winged Dagger Complete 'F.N.G.'.

Conundrum Cracker Solve 55% of Riddler challenges

Triple Dyno-Might! Kill 3 Enemies with 1 Explosion

Night Glider Glide continuously for over 100m

Run-and-Gunner Kill 20 Enemies by Shooting from the Hip (without aiming)

30 Kills: Dragon Sniper Kill 30 Enemies with the Dragon Sniper

Proficient Fortune Hunter Find 30 Treasures

Make the Jump Infiltrate a cargo ship.

Evil Train Bad guys make it clear who the boss is.

Instant Inferno Sam immediately flicked the switch to set the lodge ablaze

20 Kills: Desert - 5 Kill 20 Enemies with the Desert - 5

50 Kills: Micro-9mm Kill 50 Enemies with the Micro-9mm

250 Headshots Defeat 250 Enemies with Headshots