I just finished Sekiro's various endings + Platinum achievement.

It's been a really fun 120hrs all up for 4 playthroughs. The first 60mins was spent figuring out the first playthrough's bosses and going around collecting stuff. The subsequent runs were much easier actually. My final run was one of the hardest because I selected the option to suffer chip damage from blocking without perfect parries.

I'm quite fine with the idea of "learn to parry or die" without having to worry about builds, stats and the like. It does make for less replayability, but I still replayed this 4 times anyway for the endings alone.

I played Nioh probably a year ago, and even though there's more replayability on paper due to more weapons and builds, I only played it through 3-4x as well.

My advice going forward for anyone starting out would be:

1) Don't read guides, just play the first playthrough doing whatever you want. You can read up for completion later. Read boss guides if you get frustratingly stuck, rather than as a rule. It's more fun that way.

2) Re-map Attack to "X" (xbox) or "Square" (PS4), and dodge/sprint to "RB/R1". It's so good to be able to sprint around with both thumbs on sticks to control movement/camera. The earlier you do it, the less it'll mess with any muscle memory you've built up to date.