MX vs. ATV Reflex

The body panels will come loose after a couple of good hits each. rolling the truckwill loosen then up a bit, as will clashing with your opponants. I managed to get this achievement using my truck in the Omnicross series by bouncing of the rocks, trees and rolling a couple of times. You don't need to win the race to get this either - I did, but it's not required.

The first Waypoint race is an excellent place to do this. If you have a sport buggy, use it. It only has 4 panels to knock off, which is quite a bit less than what the other truck types have. You do not have to win the race. Therefore, you may take as much time as you like. To the left of where you start you'll see some trees. This is a good starting point. Just speed up to top speed and ram into them. Sometimes you'll need to switch up the angles and speeds to get a specific panel off. It's not too hard to do. All of the panels will come of relatively easily. If you don't see any door, hood or roof, you did it right. You should just see the vehicle's frame, seats, engine and other things. Just complete the race, and you'll get the achievement.