I just finished a proof of concept for Max Battles% in Ultimate. I barely achieved sub 9 hours (8:56 IGT).

So my thoughs on the category:
- It is a marathon category. 9 hours is a lot, and maybe just 2 of those are overworld (or even 1), the rest is pure battles.

- In Normal difficulty it would just be about endurance, because it's hard to die when you level up a lot. On Hard and Ultimate the challenge is super crazy, because you can't die on single-segment. Just to give an idea, I died around 5~6 times in the prrof of concept.

- Area 3, 7 and 8 are the hardest in both endurance and skill, because the respawners mean A LOT of battles (the 4 respawners at the end of area 8 make 80 battles in total!).

- This time I tested going full punches and techs. It worked relatively nice, slow in the beginning, then fast when you get 5-move combos. But then I realized that my body and arm offense didn't when over level 14. So there might be a cap for body part offense, something like 'no more than X levels in between certain body parts'. The main reason to go for punches + techs is that when you don't have advantages, you can use a tech into a neck lock and just repeat neck lock over and over

- A better route would be to use kick combos and still level up body through techs and just neck lock to level arms. This way might be possible to extend the damage cap on the last Areas.

PD1: I'm gonna edit my streams to get the segments of the run and upload that to my youtube channel (editing 9 hours xd)

PD2: I hadn't uploaded more guides because I was working on this. Also I'm still trying to make my documents more friendly, but it's hard. If someone wants to see the raw documents anyways I can share them on my discord

Here's the video =P