Use the following trick to jump off the walls of buildings as a Hunter in Versus mode. Crouch to charge your jump. Click the Mouse to jump. As soon as you hit the wall, quickly turn your character around so that you are at least facing 180 degrees away from your original point of view before the Hunter begins to drop. Quickly Click the Mouse again while still holding [Crouch]. You will be propelled off the wall and further into the air. This trick is useful for reaching higher places. It may require some practice.