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

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

You completed 10 melee counters in 4 minutes.

You beat a friend at pool.

You scored 180 with 3 darts.

You were on the winning team in all multiplayer team games.

You finished the story in less than 30 hours.

You completed the mission "That Special Someone".

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

You unlocked all the islands.

You completed the mission "Roman's Sorrow".

You won a multiplayer race without damaging your vehicle too much.