An average run of Sekiro is 30 hours. Even if the trainer only does it once and duplicates the save to fight the final boss every other time, it is still 30 hours + 999 times of boss fights.

They are stuck there for a while.

dailang said in comment #2579250:

An average run of Sekiro is 30 hours. Even if the trainer only does it once and duplicates the save to fight the final boss every other time, it is still 30 hours + 999 times of boss fights.

They are stuck there for a while.

Shura route can be done under 1 hour semi-casually. Or under 30 mins with knowledge of some tricks even for people not used to speedrunning.