So I noticed there is literally no guide,video or anything of how to get this achievement online.
And because i was a bit confused on what to do i decided after getting the achievement to explain how you can get it too!

Now this is a very easy achievement but a bit confusing since you have to stay in the air for a pretty good amount of time and dont be scared to wall run on anything! the only thing you cant do is walk. you have to basicly stay in the air and wall run for about a minute or less. you can use your gun to shoot down and slow your falling and dash towards walls to save yourself from touching the ground if you think you have been off the ground for enough time then let yourself fall on the ground and if you did it long enough the achievement should pop. so there you go! i only made this guide since it took some time for me to figure it out but i hope this guide helps even if its bad anyways bye!