Wall jump off 15 different walls in one checkpoint without dying.
Wall jumps are a new feature in Doritos Crash Course 2 that let you run up walls and jump off of them. To wall jump, get near a wall and jump on to it. You can now run up the wall if you wish, or you can jump off of it by pressing .
The best place to attempt this achievement is in Antarctic 5: Iceberg Alley once you have the split path unlocked. There is a point in the level where there several small walls that are floating in the air; when you get to this part, try to jump on all of the walls and on both sides of the walls. If you can not hit all of them, it is okay since there are more than enough walls before the next checkpoint to do this. You will earn the achievement as soon as you wall jump off of the required amount of walls; you do not need to go to the checkpoint to obtain it. Another location can be found in the second video linked below.
Near the end there are slabs of ice that you can wall jump off of, make sure you jump off each side. If you run out of walls, there's an area right before the next checkpoint with a loop (and a star) jump on a couple of those walls to finish of the achievement.