struggling the first real fight in sekiro and starting over repeatedly...
or other games where it doesn't force you to lose in a scripted way, but the boss is just invincible and losing or glitchcing is the only way to proceed.
You can win it, the reward is a slightly different cutscene but the ultimate outcome doesn't change. It does give a little more insight into Genichiro though.
It is really cool to go through the entire game again and completely embarrass all bosses because you know all their patterns. I got shurikened three times doing all achievements