My understanding is that Vol. 1 and Vol. 2 of X Challenge have a different set of bosses in each of their final rounds. Given that that's the case and those different stages surely affect how the runs play out, it may be a good idea to separate the "Challenge Mode" category into two separate categories: X Challenge Vol. 1 and X Challenge Vol. 2.

Also, the rules section could use updating. The game's been out for over two years now and it still says "Timing rules pending." I'd like to submit runs of X Challenge at some point and it'd be nice to know if I'm timing it correctly, so maybe we can get on that.

I think what should be done for timing is IGT just so it’s accessible for some people

Nothing on this yet?! I believe it is an interesting option for players.