MAT HOFFMAN'S PRO BMX 2 UNLOCKABLES
Unlock bonus costume
This costume can be found in any city. Do any Adrenaline Trick through any camera.
Find Boston Bonus bike
After you save the dock from the giant squid, a treasure chest will pop up. A new bike will now be lying on the docks near the building.
Find Chicago Bonus bike
After you release the Medi-vac chopper and save the downed biker, go to where the ambulance was located. There should be a bike there.
Find Las Vegas Bonus costume
There is a slot machine near the ticket building. Keep riding by it until it spits out a pair of glasses. This should take a few attempts.