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Key To The City You completed GTA IV to 100%.

Arachnophobia Defeat the Chimera.

Kill screen Get to the end.

Once Upon a Time Listen to all folktales

''Do or do not. There is no try'' Complete all Galaxy Challenges

Don't Underestimate Earth! Practice - Complete 30 Different Combo Challenges.

Threat Assessment Detect 20 enemies using the Threat Pulse in Multiplayer

Mind the gap! Take a big shortcut in the level "Mansion"

''See you around, kid'' Complete all of the events in the Galaxy

Goldie Blocks Overheat and destroy 50 gold LEGO bricks.

Careering along Complete 15 Events in Career mode

You Seem Different... Unlock all of the Shells in the game.

Threat Neutralized Use the White Boost to destroy a projectile.

TranStar Gourmand You consumed one of every type of food and drink on Talos I.

Chill Out Complete 5 events in Snowy conditions

Science Friction Earn 20 vanquishes using Crater Maker as a Space Station

Very Dead Complete A Mission On 'Undead'

Clearing the Dance Floor Earn 200 vanquishes as an Electric Slide

Slam Dunk! Slam dunk a ghost into a trap.

Speedy Rexecutioner Destroy the Metal Gear REX boss in under 2 mins 30 seconds

I Have the Touch Defeat Mimicry Marcus for the first time only using a knife.

Agro Circus Perform all stunt riding using Agro

Choices Get Penguin to overhaul a piece of gear
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Now try online Win a Quick Race with AI Difficulty set to Hard (not unlockable in Split Screen mode).

Taking It For The Team You were on the winning team in all multiplayer team games.

Pull The Knife Out Complete Chapter 8: "In the Hearts of Men"

Super Star Earn 30 stars on one profile

Banker Find 60,000 coins.

Quick on the Draw Achieve 70 EXCELLENT synchronic impact rankings.

Reaper - Kill 1500 Helghast Kill 1500 Helghast soldiers

Field Agent - Collect all intel Collect all intel within the game

Pro Musician Collect all Oud melodies

Fowl Five Piece Get a chain of 5 chickens strung together in Dead Ops Arcade.

Gift to the World You found Gustav Leitner's Connectome for Dr. Igwe.

Warp zone Reactivate all 5 warp gates.

Adapt and Overcome Complete a Daily Challenge operation.

The Good Times are Killing Me Jam with a brigand.

World 1 chameleons Found all 4 chameleons in world 1

Break a Leg! Defeat the "Old Friend" (Boss at the end of "Taking Control").

The End? Complete "Power Plant"

''You needn't worry about your reward'' Collect all Minikits

World 1 Rescue Found all Bots in world 1

Ladies and Gents, We Have a Winner! Tournament - Emerge as champion.

Stadium White clear Complete all White Stadium maps (Any medal)

''Hello there!'' Collect all characters

A Beginning Reach Story Level 10 in Story Mode.

Coolest Clear Won a level with the cool clear style shot (Except Trials and Multiplayer)

Ace Port Royal Ace Port Royal

Play ME! Found your first Audio Tape

Public service Place 5 pieces of debris in a dumpster