You exposed some infidelity.

You freed someone from captivity.

Kill 15 unaware enemies

Fill every slot in your backpack

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

Improve the dockworkers' haircuts.

Do your first job for Mike Bruski.

Protect Francesca.

Completed the game on Classic difficulty

Found all 'Gangsters of the United States' cigarette cards

Found all of the hidden cars

Found a hidden car

Found all Pulp Magazines