All you need to do for this one is to do an invert on a ramp in svm peak area. You will unlock this area after you have done a few deathraces. If you haven't unlocked it yet it is located in the far north I the map right at the cape of the map. For those of you that don't know what an invert is. It is when you ride your board up to a lip of a quarterpipe or other similar things and press the right bumper button you will then grab the lip of the quarterpipe with one hand and do what looks like a one handed hanstand with your board in the other hand. When you do this in svm peak area the achievement will unlock.