I've put about 3 hours into it on Steam and I'm liking it so far, though less than DR 1 and 2. Those had quirkier characters and more set pieces, whereas DR4 has fewer set pieces (it's mostly walking around and talking) and fewer characters overall, though some of the quirk is still there. It is a DR game through and through , but a slightly undercooked one. You have meters for food/thirst/bathroom need, but seemingly no punishment for disregarding them. There's a crafting system that supposedly only used twice in the game. Also, it runs bad on everything. I've heard horror stories about the Switch version and on my PC (Ryzen 3900X/1080ti) 4k can go down to sub 20 fps. I'm running it on 1440 now and it's running pretty smooth.
This all being said, I'm having a great time with this game and I can't wait to hop into it again this evening.