Day 3: I finished the Wallsliding mechanic (needs polishing though), the turning mechanics and the braking mechanic. All done without tutorials, and with lots of fiddling around.
I think the wallsliding mechanic was implemented pretty interestingly, so if anyone wants a tutorial on that, I'd love to make a short one. There is one drawback to the wallsliding mechanic right now though: You can only wallslide up straight surfaces. As you see in the video, you can cheat by making a ramp out of many straight surfaces, but this is inconvenient. Still having the lighting issue as well, but overall hyped with the fast af progess I've been able to make!