Finished watching the video walkthrough.
Demon of Hatred looks hard as fuck because of the huge hitbox for its attacks and 3 lifebars and that souls camera struggling with big objects thing. Cool visual effects though.
Final boss honestly doesn't look bad outside the endurance bullshit of 4 health bars. Like his attacks don't seem worse than Owl and just like Owl he's got some safe get hits in attacks like the overhead jump, the charge move and the lightning reversal. Like owl he's got little crap to parry (ninja stars = bullets). And like Owl he's fast and tracks you and has huge range with the spear (the spear swings look like they'd fuck me up the most since a lot of them seem stolen from Corrupted Monk like the jump back swing which Monk also has and is total bullshit because it's so fast you can't see it and the other swings feel like 7 Spears which is hard fight on its own). Anyhow, that's just what it looks like from watching a non-speed-runner play and take a lot of hits and still win.
Also people use the fuck out of things like rice (and even pellets not to heal but to have regen life during the fight) and using divine confetti + ako's sugar boost + subweapons. I didn't use any of this outside Ako's Sugar on bosses. I think if I was using rice/pelletes + divine confetti and new when and which subweapons to use I would've struggled a lot less on bosses like Owl and Ape and beat them much quicker. Also should've saved the Headless fights until I got Malcontent.
Also I think if they put a goddamn checkpoint in the final boss fight after the first lifebar it'd be a fight I'd enjoy playing. Demon of Hatred, if it was 2 lifebars instead of 3 I'd probably enjoy it.
I feel like if things were balanced a little easier just in that way, less lifebars, more checkpointing, not having to skip the fucking video everytime before fights like Owl/Genichiro, Sekiro would be more fun than frustrating, at least for me.
Also I followed up on the lore videos/story analysis after and while I like parts of the story, I feel like this is almost a Dark Souls 2 situation where so much of the lore is currently missing and people's theories are all over the place (like with the Centipedes). I hope the expansion DLC clear some of this up because I feel the plot is not as satisfying as I would like because so much of it is just

Also with the endings, they're alright but it's kinda weird how much the true end is straight out SEKIRO 2 - COMING SOON. I wonder if it that one bit was a push from Activision to be able to easily do a Sekiro 2 if it sells well.
spoiler (click to show/hide)
although at this point personally I'll be a little bummed if this is Miyazaki's new franchise and he makes 2 or 3 Sekiro games next since I'd rather have him do another original game or go back to more rpg souls again. But that's just my tastes. Even an easier Sekiro 2 is less appealing to me than something more souls-like.