I just tried getting this, but the problem with the solution above (for me) was that on the xbox one when I go to the time trials it tells me that the servers are not up so I couldn't use the time trials level.
Looking at some of the comments I found the training level to be a good spot and made this video for it. You need to get to this place after the training is done and you press
to keep practicing.
You will need to run at the wall and press
to wallrun, then press
at the right timing to jump so you can make it over the barbed fence. Quickly after you jump you will need to coil in the air over the fence by pressing
and then you will need to time your last press of
as you near the ground to land in a roll.
Hope you find it helpful.