About to finish my first playthrough of Sekiro. Man, what an amazing game! I thought the Nioh games had spoiled me rotten on what's possible with Soulslike combat, but Sekiro has not disappointed in that regard. I do wish the NG+ was as robust as Nioh, but I'm having lots of fun with it regardless. Great combat mechanics! I just wished I started this one sooner.
EDIT: Just came back to say how satisfying this game is. There are very few games where I had my lunch eaten by a boss on the first (or first dozen, lol) attempts, only to learn the patterns inside and out to the point where you really "get" the boss patterns, and the game, overall. As long as you dive headfirst into the deflection mechanics, this game will reward you. And this is only on my first playthrough! About to start NG+ as soon as I finish the second boss gauntlet available to me. Just so fun as long as you have the patience. I love games like this where you can feel your skills significantly improve as you adopt the mechanics. And I have yet to really dive into the prosthetics for the most part.