No matter if you have seen it in movies, video games or on other videos, wallruns are always quite astonishing to look at. For a moment it appears as if though you are defying the laws of gravity, and anything that unnatural is certain to impress anyone.
The best way to go with this is to start off slowly by using only one foot and simply walking on the wall, pushing yourself away from it. Start off with the side you feel most comfortable with, and later as you progress you can practice both legs.
Once you have done a few tries with only one step, try incorporating the second one as shown on the video. This time you will need to gain more momentum. To do this, you need to start thinking of a Wallrun as a long jump, so the more speed you get the higher you go, and the longer your Wallrun will be.
However, be sure to start off slowly and only progress as you become comfortable with the way you are going. This is a pretty easy skill to learn with just a little practice.