Before starting this trophy, you'll want to make sure that you have the Skill Roll upgrade purchased from the progression menu, otherwise you won't be able to pull this off.

To get this trophy you'll want to find a location like the one in the video that has an object you can springboard off of next to a wall you can run on and a swingpipe. To shift, run forward and hold , then hold  to springboard on a chest-high object which should propel you into a wallrun automatically so long as you're angled at least somewhat parallel to the wall, now just wallrun onto the swingpipe and Faith should automatically fling around the side of the wall. Before you land onto the ground, press  to perform a skill roll.

One Way to Perform 'Seb's Salute'