Unlock Boca Chica Track:

To unlock the Boca Chica Track you must finish first in the points standings in the Road Course Challenge.

Unlock championship video:

Win the championship then on main menu click on credit go to championship video and hit x then enjoy. Do the same for the 8 championship.

Extra Drivers:

To get bush drivers you have to go to season and make a custom season and win the season with any driver. To get more drivers you have to win a custom season on any race length and you will get more drivers.

Paintballs:

Hit select and hold L1 and hit these buttons square, right, left circle.