You completed GTA IV to 100%.

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

You collected every hidden package in the game.

You came first in 20 singleplayer street races.

You successfully killed 20 players with a pistol in a deathmatch.

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

You exploded 10 vehicles in 10 seconds.

You've met all the random characters.

You delivered all 30 cars ordered through text message.

You completed the most wanted side mission.

You completed 10 melee counters in 4 minutes.

You completed all 10 Exotic Export orders.

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