Bounce from trampoline to trampoline 12 times in a row.
This achievement requires that you bounce from trampoline to trampoline 12 times in a row without touching the ground, or bouncing on the same trampoline twice in a row. This can easily be earned in Europe Level 1, Slip Slide Ride. Towards the beginning of the level, you will come to a series of 5 trampolines in a row. Start with the first one and bounce on them all towards the right. Bounce on them in any order you want, just make sure not to bounce on the same one twice in a row. See the video below if you are confused (thanks to TealPavelski).