You completed all the unique stunt jumps.

You caught 20 criminals through the police computer.

You've met all the random characters.

You have taken all variations of the helicopter tours of Liberty City.

You completed the most wanted side mission.

You exploded 10 vehicles in 10 seconds.

You flew under all the main bridges in the game.

You successfully lost a 4 star wanted rating.

You beat a friend at pool.

You completed all 9 assassin missions.

You finished the story in less than 30 hours.

You unlocked the special ability of Packie's car bomb placement.