I did it. Not even a sub 1:20, but A SUB 1:19!! Every single skip was 1st try. I did the extended prison skip. Most of the fights are well optimise. On day 6, the RNG was absurdly good. Indrik was literally ON FIRE! He killed many enemy and saved me a lot of time.

I think that one of the only ways to beat this run is to pass the 3rd Kaysaa skip (on day 7 with Ludomir). But its ultra hazardous side and the too little time that it saves, I will take the risk to say it:

ANY% IS DEAD.