I played it, got 100% with raiho and all
they obviously reworked the gameplay, got rid of the pre-rendered graphics a la resident evil and now you can summon 2 demons at the same time just like in king abaddon, and you can JUMP now
Can't blame them, the original gameplay was fine but very simple at times, and probably made it from scratch to release the sequel too shortly after
It's really more of a remake than a remaster, I'll probably buy it but I'll be too lazy to advance in the game since I've already completed the original

I kinda hope they make another raidou kuzunoha game, they've clearly done a lot of effort just to re-release the games