When you want to run on the walls you have to know some stuff:
♦You have to be wolf for it.
•you can not run on all walls (look for big straight walls)
•When your gonna run on the walls. just run sidewards to the wall and jump.
•when you want to stick on the wall you have to be a Ghost,Smart or Psycho wolf.(all the others can but you need the item "Wolf Ability" witch is not available at this point.
For more questions feel free to ask!