16 hours later, I'm experience frustration and reward on the same dose, like a nostalgic trip to when the Undead took his first steps out of the prison (or, if you might, when that looter meet his dead and the Nexus trapped his soul :P). It's definitively an enjoyable, full of misteries and exploration affair, and I'll be honest, I'm downright loving every second of it, aside from some specific parts.
The dungeon design is great, as always. It suffers a bit from a "been there done that" segments, but that's something that it is bound to happen when you've already come up with four previous games with exemplary dungeon design.
Also, talking about nostalgic trips, this game cashes in nostalgia more than I thought. I've chuckled sometimes for certain things I've stumble upon. It's awesome.
As for where should it fall, this would be how I'd put them (from best to worst):
· Dark Souls 1
· Demon's Souls
· Dark Souls 3
· Dark Souls 2