I picked up Sekiro last night on your recommendation. It's exactly what I've been looking for and it's kicking my butt so far. Not the best optimized game for PC, but the really fast quick-twitch mechanics are the closest I've seen to Ninja Gaiden in a long time. I found a few YT videos and forums where old NG fans consider this the Souls game they finally like playing, and i have to say I agree.
I still have hope we'll see a competent NG in the near future, but Sekiro is awesome now. Great recommendation