Just Being Thorough is an in-game achievement in Run 3.
We reccomend to use the lizard, mainly because it's 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 video 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.