The knight characters are really cool!
As for the wall jump, it's a neat idea, but in practice I ended up just spamming jump to go straight up the same wall without ever leaving the wall or being in any danger of falling. A bit of an impulse away from the wall while "wall riding" could really help address that.
The jump for traversing platforms felt pretty slick, I did enjoy being speedy and jumping across platforms! That was fun!