current all boss speedrun wr show a new jump skill, allow kill artisan without self-pull, also shorten palace walkthrough, i don't know how it works so i try many times but still fail, can someone teach me how to do it ? (input/position/time/other) Thank you.

I know attack higher jump and have reached artisan boss room, but i don‘t know how to arrive his platform.

join the discord. there you will find some speedrun tricks, one of them being the description of how to pull this super long jump off.