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Hip to Add Squares Increase your inventory slots.

First Break-In Open a dial safe.

Bare-knuckle Slugger Defeat 50 Enemies with Hand-to-Hand Combat

Unforgivable On the Loose - Do not forgive Madison

Behind Closed Doors Close an open door by yourself.

Sheep Kebab Flame 10 sheep in Stone Hill

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

30 Kills: Mk-NDI Kill 30 Enemies with Mk-NDI Grenades

Misdirection Distract 15 enemies with rocks (Campaign only).

Stop, Drop, & Roll Defeat 3 Majini at once by setting oil canisters on fire.

A Vault-like Mind Open a portable safe.

Brother In Arms Liberate 1 Outpost playing as Hurk (Campaign Co-op only).

Customizer Customize a weapon.

100 Headshots Kill 100 Enemies with Headshots

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

50 Kills: M4 Kill 50 Enemies with the M4

Hangman Kill 20 Enemies with Gunfire While Hanging

Recurring Nightmare Face your biggest fears and keep your sanity

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

Drive By Stop an armored truck by taking out the driver.

Novice Fortune Hunter Find 20 Treasures

So Close... The Old Warehouse - Reach the end with all characters... and fail

Clean Up Your Act Defeat Sasha.

Solitary Confinement Capture and lock up Harley Quinn

True Potential Purchase every upgrade for a single power.

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

Path to the Goddess Solve the Goddess Statue puzzle.

Lateral Thinker Solve 25% of Riddler challenges

Changing Lanes Perform a Vehicle Takedown from the passenger seat of a vehicle (Campaign Co-op only).

Vermin Extermination Destroy a Mr. Raccoon.

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

Double Trouble Defeat two Titan Henchmen at once

Insomnia's Waking Nightmare Completed the Prologue.

Headshot Expert Kill 5 Enemies in a Row with Headshots

Cleric Beast Defeat Cleric Beast.

Don't Need No Stinkin' Gun Defeat an enemy with a knife.

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

50 Kills: FAL Kill 50 Enemies with the FAL

50 Kills: Dragon Sniper Kill 50 Enemies with the Dragon Sniper

Good Train Good guys proactively facilitate transportation solutions.

Arms in the Air Block an enemy attack by guarding.

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

Master of Unlocking Use a lock pick to open something.

Cattle Prod Defeat 30 enemies with the Stun rod.

Masters of Removing Work together to save someone special.

Moonwalker Simulated walking backwards for fifty seconds

Stunt Coordinator Complete 10 of the stunts on the stunt list.

Blood Gem Contact Acquire a blood gem that imbues hunter weapons
with special strength.

I'm not Scared! Twins - Follow your brother without making any mistakes

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