Sorry for taking liberties with your time.
You achieved the highest personal rank possible in multiplayer.
Complete 25 drug wars. (The Ballad of Gay Tony)
Dance perfectly in both Tony's nightclubs. (The Ballad of Gay Tony)
Hit a flag with a golf ball four times. (The Ballad of Gay Tony)
Finish the Ballad. (The Ballad of Gay Tony)
Score 100% in all missions. (The Ballad of Gay Tony)
Score 80% or above in all missions. (The Ballad of Gay Tony)
Freefall for the longest possible time. (The Ballad of Gay Tony)
Complete the Trinity. (The Ballad of Gay Tony)
Win the L.C. Cage Fighters championship. (The Ballad of Gay Tony)
Complete all base jumps. (The Ballad of Gay Tony)
Finish the story. (The Lost and Damned)
Build Terry and Clay's toughness to 100%. (The Lost and Damned)
In the bike races, whack off 69 bikers with a bat. (The Lost and Damned)
Become leader of The Lost. (The Lost and Damned)
Help Billy get his bike back. (The Lost and Damned)
You won in all variations of multiplayer games.
You were on the winning team in all multiplayer team games.
You killed 5 opposing team members.
You successfully lost a 4 star wanted rating.
You exploded 10 vehicles in 10 seconds.
You completed GTA IV to 100%.
You came first in 20 singleplayer street races.
You survived a 6 star wanted level for a full 5 minutes.
You delivered all 30 cars ordered through text message.
You collected every hidden package in the game.
You won 20 different multiplayer standard races.
You caught 20 criminals through the police computer.
You completed all the unique stunt jumps.
You completed "Deal Breaker", "Hangman's NOOSE" and "Bomb da Base II" in time.
You've met all the random characters.
You won a multiplayer race without damaging your vehicle too much.
You successfully killed 20 players with a pistol in a deathmatch.
You killed a Rockstar in multiplayer.
You were successfully promoted up a rank in multiplayer.
Your friends all like you above 90%.
You flew under all the main bridges in the game.
You completed the most wanted side mission.
You unlocked the special ability of Packie's car bomb placement.
You unlocked the special ability of Brucie's helicopter ride.
You beat the high score in QUB3D.
You made a taxi trip from one island to another without skipping.
You completed all 10 Exotic Export orders.
You completed 10 melee counters in 4 minutes.
You have taken all variations of the helicopter tours of Liberty City.
You managed 5 car rolls in a row from one crash.
You unlocked the special ability of buying guns from Little Jacob.
You got a turkey in 10-pin bowling.
You completed all 10 package delivery jobs.
You completed all 9 assassin missions.
You finished the story in less than 30 hours.
You have completed the story.
You completed the mission "That Special Someone".
You completed the mission "I'll Take Her".
You have amassed a fortune of $500,000.
You completed the mission "Museum Piece".
You completed a 500 foot wheelie on a motorbike.
You unlocked all the islands.
You beat a friend at pool.
You scored 180 with 3 darts.
You completed the mission "Roman's Sorrow".
You were invited into your girlfriend's house.
You completed the mission "Uncle Vlad".
You unlocked the special ability of Roman's taxi.
You have completed the first mission.
