Thanks so much for the feedback! It's genuinely super helpful.
Not being able to look around fully while jumping was due to animation issues I was having, but since I ended up disabling the character model for everything except the wallrun animation anyway it definitely should have been taken out.
The problem with jumping forward while climbing is also something I totally missed since mantling was added in the last minute, and before that you had to jump forwards to climb on top of stuff. Hopefully getting more animation in will help make things more readable and less horribly confusing, as well.
Sliding and sprinting are both planned to be implemented, along with vaulting over/springboarding off of low obstacles. While building the level I was definitely running into a problem of not having enough to do while running along most rooftops.
Level design comments are appreciated. It's hard to tell how people are going to expect or react to things when you already know exactly where to go and where everything is, so it's good to know where things don't make sense.
Edit: Pause and options are something I definitely should have added, as well. I realised just after posting that there's no way to change the mouse sensitivity, which is straight up awful.