I've finished my first ever playthrough (on Normal) and immediately jumped in re-doing all duels on Lethal difficulty. Spend the whole Sunday, but beat them all no damage, focusing on perfect parry and perfect dodge!
I genuinely enjoyed the game - combat, story, even exploration (usually I really struggle with open world exploration games) - everything was just great. And combat - wow. As a parry addict I am extremely satisfied. Can't wait to play Ghost of Yotei!
PS: I've tried to post full clip several times, but it got auto-removed by Reddit filter. I think it has something to do either with length OR with Jin being butt-naked (before removal clip forcefully get NSFW tag haha). But you can still watch it here on my Reddit page (it got NSFW auto-tag again, had to remove it manually lol)
https://www.reddit.com/user/DamnHare/comments/1uoh6t1/ghost_of_tsushima_all_bosses_lethal_difficulty_no/