AlphaOmegaSid

Fed The Fish You completed the mission "Uncle Vlad".

Driving Mr. Bellic You unlocked the special ability of Roman's taxi.

Lowest Point You completed the mission "Roman's Sorrow".

Full Exploration You unlocked all the islands.

Impossible Trinity You completed the mission "Museum Piece".

Gracefully Taken You completed the mission "I'll Take Her".

That Special Someone You completed the mission "That Special Someone".

You Won! You have completed the story.

King of QUB3D You beat the high score in QUB3D.

Assassin's Greed You completed all 9 assassin missions.

Order Fulfilled You completed all 10 Exotic Export orders.

Retail Therapy You unlocked the special ability of buying guns from Little Jacob.

Liberty City Minute You finished the story in less than 30 hours.

Courier Service You completed all 10 package delivery jobs.

That's How We Roll! You unlocked the special ability of Brucie's helicopter ride.

Dial B For Bomb You unlocked the special ability of Packie's car bomb placement.

Cleaned The Mean Streets You caught 20 criminals through the police computer.

Manhunt You completed the most wanted side mission.

Liberty City (5) Your friends all like you above 90%.

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

No More Strangers You've met all the random characters.

Dare Devil You completed all the unique stunt jumps.

Endangered Species You collected every hidden package in the game.

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

Taking A Liberty Sorry for taking liberties with your time.

Privacy Issues Destroy 1 Watcher. (1/50)

Pierce the Skin Clear The Root of the Tower.

Night Terrors Finish the Campaign on Ultra Nightmare difficulty

Through the Viscera Clear Trachea.

To explore strange new worlds Attain a Time Trial star rating of 75. [Pure Time Trials]

Enlisted Promoted to rank: Private

Superstar Attain a Time Trial star rating of 90. [Pure Time Trials]

Hunter Kill 500 enemies.

Xylem Clear Lumenosynthetic Reactor 2.

Ninja Style Filena killed 50 enemies.

Fetus Clear The Womb.

Enlightenment Clear The Seed of Gnosis.

Clear Your Mind Clear Cavitas Cranii.

Headache Kill 200 enemies with headshots.

The Caped Crusader Complete Batman's Kombo Challenge

Steady, Steady... Shoot an enemy with a Plasma Lancer from 50m.

Bring It On! Complete Jax's Kombo Challenge

Stop Looking At Me! Destroy 20 Watchers. (20/50)

Predator Kill 1000 enemies.

Fastest Man Alive Complete the Flash's Kombo Challenge

Grand Master Complete Sub-Zero's Kombo Challenge

Emperor of Outworld Complete Shao Kahn's Kombo Challenge

Dermal Lesion Clear The Root of the Tower on Hard.

Tarkatan Champion Complete Baraka's Kombo Challenge

Green Lantern's Light! Complete Green Lantern's Kombo Challenge