To quickly climb a surface that is slightly slanted (but not completely vertical or horizontal) use Evade. You can also jump to it from several stories up, thus surviving a fall. For example, on "Forge World" you can jump from the high mountains located to the left of the waterfall to the slightly tilted rocks below. Note: Your speed also affects the likelihood of your death. Hitting these rocks will slow you down, and are tilted so you do not technically "hit" the ground. Use Evade to get to small spaces, and quickly scale objects.