Complete Chapter 11.

Travel at 125 mph.

Clean up after Joe.

Kill 5 enemies in rapid succession with a headshot.

Upgrade one of your cars to the maximum level.

Keep any vehicle at 30mph or over for 5 or more minutes.

Complete Chapter 6.

Get all wheels of your car into the air for at least 20 meters and then touch the ground again.

Complete Chapter 4.

Sell all the gas stamps before the time runs out.

Improve the dockworkers' haircuts.

Do your first job for Mike Bruski.

Find at least one collectible in the game.