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

Complete Chapter 4.

Improve the dockworkers' haircuts.

Do your first job for Mike Bruski.

Find at least one collectible in the game.

Complete Chapter 1.

Completed the Collection

Found all Pulp Magazines

Found all 'Gangsters of the United States' cigarette cards

Lost the cops after accruing a five star police chase

Performed a wheelie for 3 seconds

Found a hidden car