Love a good 3D movement system. This is a great start, I think, and using this platforming to traverse environments is interesting; it pokes problem solving parts of my brain to navigate up and around the place.
The rooms here feel gigantic, which makes sense for this sort of high-speed platforming system, but I think it could help the engagement a lot if the environments felt fuller and closer together, to make the movement feel more like a tool to get around, explore, and accomplish things, rather than just the means to follow the paths to the game elements. Adding more platforms and walls around the place could help, too -- each surface is a possible avenue to get farther or higher, and I think that kind of freedom would be pretty enjoyable to play with. The run back to the start of a sequence is also a bit of a break in the flow, especially with how long of a walk they can be.
I also think this could be very fun with more of a focus on momentum and building speed, then using the wallrun to carry that speed over huge distances.
Audio would be another thing to improve this a lot. Even just a handful of sounds for actions like jumping, running, and dashing could do wonders for the game feel.