Abentius

You Again? Find all 3 Boat Captain Keys

Quarter Cruncher Unlock all 6 arcade machines.

Viking Legend Win Every Trophy

Tragedy Tristis joins Aurora's Party.

Jail break-in Finish episode 3

Behind the Scenes Activated all Commentary Nodes with the Developer Commentary Modifier enabled.

Easy Come, Easy Go Acquire more than 15,000 Fleeting Echoes on a single attempt

Just Beginning Complete all the main path story levels

Sonar So Good Defeated the Bringer of Nightmares at the bottom of the ocean.

Savior In multiplayer, save your fallen friends from certain doom!

Where are the other two? Found the nuke

Aced It Get an A+ on any chapter

A Man of Character Receive maximum personality ranking.

Prizes, Plunder, and Adventure!  Win every trophy.

Over the Moon Recover the moon.

Kategida Kindred Óengus joins Aurora's Party.

Found at last Find the third missing piece

Understood the Assignment Complete 9 Mastery Quests

Homerunner Completed the game in less than 1 minute with no Modifiers enabled. (From New Game in a single session only)

Fight at the Forum Participate in a fight at The Forum arena

Dust to Dust Find 1 Artifact in 2012.

Gotham Base Jumper Jump off the tallest building in Arkham City and glide for 1 minute without touching the ground.

Perfectionist Upgrade a skill to its highest level.

Lovely meeting you! Release ASOBI into your room.

One Day at DARPA Complete all DARPA training exercises.

Hero Tech Battle with a secret weapon.

Helloooo, Nurse Revive a friendly troop.

This is the end Failed to prevent the attack

Combo Pro Perform an 8x combo

Recycler Defeat the Goliath in the single player Campaign.

1989 Kill 1989 enemies
0/1989

Piscean Promise Gen joins Aurora's Party.

Sunrise Recover the sun.

Mark Your Territory Collect all the hidden Sly masks.

Coronation Dethrone the Queen of the Night.

Intellectual Rescue the fourth hostage from Riddler

Rampage! Kill 40 hybrids in the single player Campaign.

Navigate Like Drake Take a look at every map in every episode.

Kung Fu Fighting Inflict a set amount of damage to Wesker in "Lost in Nightmares."

Sightseeing Complete Chapter 2.

Speedreader Completed the game having found all 24 journal entries, with no Modifiers enabled, in less than 10 minutes. (From New Game in a single session only)

8-Bit Bentley Style Beat every hideout arcade's top high score.

Walkabout Find the fourth missing piece

You talkin' to me? In the Olga memory remix: have David awaken and talk to Olga

Home Run Destroy an incoming missile or grenade.

A Complex Mind Reach all possible conclusions in the game.

Dog Lover Kill 99 dogs
0/99

Perfectionist Collect all possible in-game trophies.

Splash! Destroy the Naval Cannon.

Murder incorporated Finish episode 4