Rostrum

I'll Make it Double Doubled your chips at L'Amant.

Lovers Quarrel Green Arrow must defeat Black Canary with the final hit coming from Target Practice

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

Moving On Up! Collect 20 Specter Coins.

Detective Story Complete the Squats' detective board.

Invincible Warrior Kill 50 enemies in a row with inventory weapons without losing health.

Feeling Prepared Install equipment into every slot on your ship.

No Assistance Required! Completed a race without any assist settings.

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)

All Creatures Great and Small Complete your Animal Tome.

90s Chic [Tape 2] Changed outfits at every opportunity.

A Fistful of Studs Complete the Old West

Hang 'em High! Kill 30 enemies while they're suspended in the air with the grappling hook.

All New Machines Scanned Encountered and Focus scanned every new machine in the Burning Shores.
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Stay Down Knock an opponent into an Arena Transition 25 times

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

No Longer Friends Cyborg must defeat Robin with the final hit coming from Apokolips

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

Heavyweight Earn a Bronze Medal in all Infierno challenges

One does not simply... Walk into Mordor.

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

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

Proto Tyrant Down Again Defeat the Proto Tyrant.

Quiet and Falling Collect the Crystal Heart in Chapter 5

Wash my hands of this mess Bounty Filthy Hands Floyd

Alley-oop! Shoot down a Hunter or an Eliminator while they are jump attacking in the air.

Cycle of Blood Completed Chapter 12.

Back in the P-Arrr-ty Unlock MetalBeard

Papercraft Wizard Collect all the papercraft plans in the world

A Real Grumple Dumpus Complete the Harmony City Level

Pro Catcher Capture 100 Monkeys.

For Those Hard to Reach Places Obtain the RC Car.

Unwanted Discard 25 fish.

No More Running Complete Chapter 7 B-Side

Center of the Earth Complete Chapter 6 B-Side

Judge me by my size, do you? Reach Rank 25

Warrior Monkey Play the Specter Boxing mini game.

The Bond Entrust the Ring.

Troubleshooter Completed 5 types of Trouble Missions.

Singles Master Win a Singles match.

On Leather Wings Get picked up by the Infected Bat.

Relic Hunter Obtain 10 relics

Oodles of Items Collect 100 Items in the Game

I was talking to the spaceship... Unlock Benny

Krypto Come Home Play as Krypto in the Man of Steel level

Regal Completely upgrade one throne.

Phasmophobia Defeat the boss in the Forest Abkhazia.

How 'Bout a Light, Bud? Defeat Mimicry Marcus with a Molotov Cocktail or a Napalm Grenade.

Hyper Lake Foscari Defeat the Avatar of Gaea in Lake Foscari.

Are You Trying to Get Rid of Me? Find 30 unique reactions to the Spoon