IceRelease

C-Section Knock down an enemy with Contact Beam Alt-Fire then kill it with Primary Fire before it stands up

Gotta patch them all! Find all SAT Patches

Close Encounter Kill 10 alien Necromorphs.

I can open doors! Complete the Breach in 10 seconds

Think Fast Kill 30 Necromorphs with Kinesis objects

TLAD: One Percenter Help Billy get his bike back. (The Lost and Damned)

Weaponsmith Made one of every custom weapon

Through the fire... Complete Mission 3

Machines do it better Use the Sensen RIP to make robots knock 20 human enemies out

It's all in the details Find all Mnesist memories

Skeet Shoot Throw an enemy into the air and kill him with gunfire before he lands

Double, Double, Toil And Trouble Create 20 Concoctions.

Technical Difficulties Kill the NewsWatch 6 team of Tom Dawson, Bud Langley and Sara Stephens

Monkey Magic Complete all chapters on Normal.

Pest control Find all Scaramechs

Retail Therapy You unlocked the special ability of buying guns from Little Jacob.

Skewered in Space Impale an enemy into a Decompression Window to cause it to blow out

8-hit wonder Perform 40 8-hit Combos

Dabbling Collector Obtain 5 pieces of Treasure Art.

The Destination of Hatred Defeat Seymour Omnis

Chapters 8-11 (Normal) Complete Chapters 8 through 11 on Normal difficulty.

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

Thirsty Fighter Pick up 50 drink items in Scenario Campaign Mode.

Embraced the Darkness In Vendettas, acquire all the talents for one character

Treasure Enthusiast Collect 100 treasures in Scenario Campaign Mode.

Bakugami Learn how to use Cherry Bomb.

My Boom Stick Kill 6 enemies at once with Line Gun's Alt-Fire (single player only)

Raising the Stakes Awarded for collecting your first prize at the casino.

“A Shocking Turn of Events” - Rescuer Rescued the Little Sister in “A Shocking Turn of Events”

“The ‘I’ in Team” – Collector Found all collectable Roses in “The ‘I’ in Team”

Vault-Tec C.E.O. Collected 20 Vault-Tec Bobbleheads

Paradigm of Humanity Reached Level 20 with Neutral Karma

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

Elf-friend Join forces with the sons of Elrond.

Shielded from Harm Purchase all Shield Upgrades.

The Key to Victory Obtain the boot-up key in Scenario Campaign Mode.

No Assistance Required Complete a Special Ops Mission Mode game on Hardened or Veteran with no player getting downed.

He's No Good To Me Dead Complete all Bounty Hunts

Wicked Weave Master Execute 20 Wicked Weave attacks while using Dodge Offset.

Playing With Fire Defeat 100 enemies with the Flamethrower in Scenario Campaign Mode.

Fighting Fit Purchase all Combat Upgrades.

The Swarm King Kill 50 enemies who are swarmed while playing as Jackie

Knife Beats Chainsaw His engine roars, but my knife is strong enough to take him out. (Ch.3)

Troublemaker Takedown 50 Cops

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

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

One Man Army Kill 400 enemies.

RIG Master Fully upgrade your RIG.

Anything Else? Destroy all computer terminals in Starkiller Shield Room as Kylo Ren

Chapters 12-13 (Normal) Complete Chapters 12 and 13 on Normal difficulty.