I found it by complete accident one day on twitch, a group known as Kusogrande that does blind races of bad games was showcasing this. Then i watched the TAS and found out it has some interesting skips, if only the third level could be skipped this would be a great run. There is also MK Mythologies Gold 2000, thats for the SNES, i tried to speedrun it but when Sub-Zero's ice blast knocks the opponent down instead of freezing them, thats when i draw the line xD Might give it a try sometime in the future
I don't know if you play mythologies for fun or just to speedrun but there's a channel called Classic Game Hacking that made a cheats trainer for mythologies on ps1. It can enable all powers at the start of the game, infinite ice, unlimited slide, etc. It can even be burned to disc and played on a modded ps1. Would be interesting to run the game with all powers unlocked to see how much faster it would be without worrying about farming for exp.
Its an interesting idea, some sort of NG+. I had a similar thoughts about doing a TAS playtrough with that cheat so i can use the attack cancel glitch from the start. It would be interesting to see what the ice clone can optimize in levels 1-3 and it would be way faster as you can shatter any enemy instantly.