Fill the Nitrous bar then use it all in one go without hitting anything

Push your human shield into an opponent in Story Mode.

Complete Chapter 10.

Complete Chapter 9.

Kill 10 enemies with exploding canisters.

Complete Chapter 7.

Kill 5 enemies in 15 seconds with any pistol.

Complete 1 mission in Co-Op.

Find at least one collectible in the game.

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

Complete Chapter 4.

Improve the dockworkers' haircuts.