MELOS16

That is a rare gift. Reach the top of Amon Hen without being caught once by Boromir. (Single Player Only)

Pacifist Clear the "Intel Operative Rescue" Side Op without killing a single enemy

Fisher is the Other Sam Proceed on the monorail in Act 3-4 without being spotted by the enemy troops or searchlights.

Love Them and Leave Them Drive every Car

Talion A.D. Descend into the bowels of an urban jungle and confront a warrior-priest.

5 Hit Combo Perform a five-hit combo in Score Attack Mode

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)

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

Sorry, we’re DEAD In Shadows of Evil, kill 10 zombies that are inside of a store in one game.

Auld Lang Syne Destroy two enemy robots who have been distracted by a cigarette.

One does not simply... Walk into Mordor.

A Floral Feast Feed carnivorous plants with three or more different kinds of treats

Wall of Duty Kill three Enemies with the Riot Shield in the Campaign or in Co-op.

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

Phasmophobia Defeat the boss in the Forest Abkhazia.

Piece of Cake Complete the SP campaign on Easy Difficulty

Three-Second Rule Pick up your fallen head 100 times.

Not All Miss In multiplayer, defeat 3 enemies within one Vanguard usage 5 times.

Dual Pit Experiment Do the same test twice

Beating the One-Eyed Worm Defeat the Leech

Running Up the High Score Complete Extra Life Mode with 10 Extra Lives in your Inventory

Scanned Alone Stand in a defective turret detector

Duke Angry, Duke Smash! Kill 15 aliens with melee attacks while on steroids

Creative Space You took a weird detour through your imagination.

Vrooom! Maintain sprint speed for 30 seconds.

The Heat is Off Escape successfully from all Heat levels

QForce Master Unlocked for earning the rank of Master.

Sayonara Board the Ark of Yamato.

Furious Retribution Kill 100 enemies using Righteous Fury
43/100

Fustercluck Off Complete all side missions and crew challenges in Krieg's Mind.
0/22

Treasure Trove "All the four vessels now belong to me!"

Guardian of Gear You are fully fitted. Now, swing that staff and fight!

Explosive Finish Kill 12 enemies with explosive barrels while riding the server lift during Echoes of a Cold War.

The Last Kryptonian Supergirl must defeat Superman after connecting 20 Kryptonian Lasers

Capable Operative Complete Separate Ways on Standard mode or higher.

The Sire and Sons "For what deed, must the four waters they governed roam free?"

Don't tell the Elf... Throw Gimli 30 times.

The Dark Lord Defeat Yami.

Specter Gauntlet Upgraded Fully upgraded the Specter Gauntlet.

Hippy-Stomper Foot stomp 12 aliens

Daredevil While affected by one Flashbang, kill two enemies in the Campaign or in Co-op.

It won't be that easy! During 'Prologue', jump into the fires of Mount Doom as Isildur.

You Got The Message You delivered all 30 cars ordered through text message.

One Bird, Three Stones You couldn't have known

A Crappy Way to Die Kill the enemy in the porta-potty.

Here Kitty Kitty Scare the cat hiding from a party

Ye Who Enter Open the gates to Vaulthalla.

Every player succeeds in a Party Round Awarded when every player successfully completes a Party Round.

Whole world in his hands Bring balance to both realms

The best laid plans... Win both Contraption Challenges