Well last famous words, sorry, I'm back.
Okay that was the version I was looking for, but now I'm stuck. Have reached the place just before he reaches the pillar for the fourth puzzle piece and has to shimmy along yet another rope onto white stones by turning round and hanging from one arm then jumping up onto the stones, and again to climb up. Well after many many tries and back to the checkpoint I just cannot get to the white stones I keep falling into the abyss. I have held the R arrow key down and pressed spacebar at the same time. I have held then let go of arrow key then pressed spacebar he either plummets as per, or holds back onto the rope. Have you, anyone, any ideas please?
Nothing is forever