Honestly, this arena is much easier than story mode at this difficulty. In story mode, many sections require you to be extra careful (Oldboy hallway, courtyard, hangar, disco area, the room beside the disco area, the club VIP room, first fire trial, etc). Not to mention some area structure is BS.
But in this arena, there are only 5 hard waves. Also, the big arena really helps in isolating enemies.
I'll still try to run story mode single segment of this difficulty. But if it still fails after a lot of runs... I'll take this hollow victory (cringe af)
Hidden modifiers at the start of the video:
Relentless goons
Master difficulty
Mods used:
Juggernaut's stance: https://www.nexusmods.com/sifu/mods/320
NoSloMo: https://www.nexusmods.com/sifu/mods/591