I posted a tutorial series some time ago as part of a true first and thirdperson project i did to learn UE4. Even though it’s pretty old, it might have some elements you can use if you want to build it yourself.
Towards Ep 18 i start with the climbing stuff. But just beware it’s an old set of videos i did when i just started out with UE4 and the sound volume is sadly very low 
Later on i started out on a new climbing system, but that is sadly parked for now, since i don’t have the money to buy decent mocap equipment to finish it. A short preview (yet another **** teaser) can be found here:
