In this level you need to dislodge all of the crumbling tiles in Level B-3.
We recommend to use the Lizard, mainly because it is the slowest character in Run 3. The Runner is good too, because her agility is better. There isn't really much of a technique to this, just try and time your jumps while trying to dislodge all of the crumbling tiles. You can watch the walkthrough below if you need more help.
A very helpful tip is to get a definite strategy. This will make the achievement much easier. You can use the route Random Pro used or make another.