Ramp tricks on vertical slopes turns out to be possible after all. The attack input is frame-perfect though, and your X-positioning has to be correct so you can get far enough up the ramp (aligning with the left part seems to work). This is very finicky. The second trick on the bottom ramp is also new, and also frame-perfect.
For both tricks you actually have to turn around before doing the jump attack, which makes it even harder. Especially the first one.
In RTA runs I definitely wouldn't go for the first trick, but the second might be worth trying. You only have one shot at it but it saves approximately 4.5s.
