Are you speaking of the navigation of the grapples, the rock puzzle or navigating the rock fall/wall climb?
I imagine its one of the latter.
For the rock puzzle:
-Push one rock up the ramp, push the other beneath it, push the upper rock atop the lower rock, push the stack to the low wall, pull the upper rock towards the high wall, get atop it and leap for the ledge
-Hold R1 to fall quickly, press X to scale the wall quickly. Evade rocks. It helps to dodge one then return to the side you started and continue climbing *but that's slower than just leaping about with confidence*
~If this is insufficient aid, make it known