Can't speak for the graphics other than that it reminds me of old school wrpg from ps2 era, in 60fps, but I rarely care about graphics in an action game other than art style.
The demo is better than I thought initially, I can see people enjoying the retail game because there will probably be a larger moveset, but the demo was pretty dull. It felt like playing a dynasty warrior game, but of course with a larger variation of enemies and a bigger moveset, enemy patterns are generally predictable and the moveset is all about area attack, and mashing through a crowd of enemies, with the dash and dull basic attacks it especially reminds me of that new multi raid DW game on jp psn, I could see it being fun for what it is.
It's probably just me but it feels like enemies don't really give you much feedbacks from slashes, pressing the slashes until the boss does his 3 seconds long animation for their attacks, dash to avoid that, and repeat until you get this really slow QTE made it rather dull, that and the button spamming health fountain makes me believe you're encouraged to follow that same pattern over and over and not get hit, because it made me not want to use that fountain behind a boss, I might remember wrong but you don't even get to use that fountain after you beat him since you're forced to ride him.