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Super Collision Course Either on (at least) your 2nd playthrough or in Hard (or greater) difficulty, conquer the fierce battle at Glaivend Basin without using any items!

Game Clear: Evil Completed the game on the Evil difficulty setting.

Epic Tale of Sorcerers Acquired all trophies.

The Great Crisis on Sixth Street? Learn about the incident on Sixth Street.

There Is Only One Truth Catch the culprit who used the EMP to trigger a series of incidents.

Big Game Trapper Use a hypno trap to turn a Rhino friendly in Mayday in Regular or Hardcore difficulty.

West Side for Life In Blood of the Dead, reach Round 20 without leaving the West Side of the island

Lights Out Complete the "Light 'Em Up" Special Ops mission on Veteran difficulty.

Outsourced Investigator Complete "Old Capital Metro: Edge" in Hollow Zero for the first time.

Basic Instinct Kill the assassin at the docks in Chapter 3 as Caddoc

Undiscovered Truths Find all the intel hidden in Nightfall.

Captain Ephinea (100 titles) Acquired 100 different titles for Malik.
Just a little more! Note: Excludes bonus costume titles.

Empowered (100 titles) Acquired 100 different titles for Hubert.
Just a little more! Note: Excludes bonus costume titles.

Girls' Ops Complete a Side Quest, Extra Quest, or Multiplayer Quest with a party consisting of Silica, Lisbeth, and Leafa.

Deliver This Complete the "Special Delivery" Special Ops mission on Veteran difficulty.

Acquire Waffle Weapons! Obtain the Ray Gun, DG-2, and the Monkey Bomb at the same time in a game. (Map Pack 3 only)

Bike Win 5 Festival races using a Bike

Monster Master Maximize the research level for almost all large monsters.

I Know a Shortcut In Voyage of Despair, take every fast travel path in a single game

Return to Rightful Owner Help the two Public Security officers retrieve the evidence.

Acidic Alchemy In IX, Get a kill with the Acid Trap in each of its craftable locations

Razor Sharp Kill 15 enemies with the Forest flechette gun on the Road to Kala Moor

Avenged Confronted the culprit behind the Vael family's murder. ("The Exiled Prince" downloadable content)

Memento Gave Sebastian a family heirloom. ("The Exiled Prince" downloadable content)

The third faction Rescue all the Buddies from their respective predicaments

Fodra Queen in 60 Seconds Defeated the Fodra Queen in a minute or less.

A Time of Wood and Stone Gathered the lost lore of Cadash Thaig ("Witch Hunt" downloadable content)

Flyswatter Destroy all helicopters in the "Vertigo" Special Ops mission.

A New Hope See all of the endings of Ninja
Scroll of the Demon Blade.

Not on My Watch Kill a fleeing Wargar in the town of Dyfed

I'm hungry for some meat! Acquired 100 or more Giant Meat.

Game Clear: Chaos Completed the game on the Chaos difficulty setting.

Hi Score Collect 1,000,000 points over all story levels you have played.

Egg-stra Devastation! Complete the Egg-Stra XP challenge and then destroy a hive in the Devastation DLC package.

A Little Pack Here, a Little Punch There In Voyage of Despair, use the Pack-a-Punch at every possible location in a single game

Bookwyrm This is proof that you've become quite familiar with the Library. How to obtain this is kind of a secret, but if you take the time to do a bit of reading now and then, you should be pleasantly surprised.

Pinnacle Complete the "Vertigo" Special Ops mission on Veteran difficulty.

Party Animal Awarded for earning the maximum number of party power points.

High Score In Zombie Rush, obtain a Personal Score of 250,000

Exorcist As Caddoc, send the demon in the library back to hell at the end of Chapter 4

Mindful Vandalism Place a sticker or a decoration on another player's sackperson.

Chatterbox Sometimes, after you've found a discovery point or when you're at a save point, you have the opportunity to press L3 to initiate a conversation between your companions. This is proof that you've experienced many Things and had a lot of Opinions about them.

A Bridge To Somewhere Extend the bridge in Awakening in Regular or Hardcore difficulty.

Deadhead Get 150 zombie headshots in a single game. (Map Pack 2 only)

Accessory All Areas Awarded for making every single available improvement to an accessory.

Nightwing Revenge Obtain 78 medals on the original Arkham City and Nightwing Bundle Pack ranked maps (as Nightwing)

Terma-nated Defeated Solomus and the Terma Ten.

Ultimate Collector Find all treasure.

Robin Revenge Obtain 78 medals on the original Arkham City and Robin Bundle Pack ranked maps (as Robin)

One with Oblivion Defeated Lambda Theos. Impressive!