You killed a Rockstar in multiplayer.

Help Billy get his bike back. (The Lost and Damned)

You've met all the random characters.

You caught 20 criminals through the police computer.

You completed all 10 package delivery jobs.

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

You completed 10 melee counters in 4 minutes.

You survived a 6 star wanted level for a full 5 minutes.

You exploded 10 vehicles in 10 seconds.

Your friends all like you above 90%.

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

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