The thing about the Souls series is that they are superbly fair. I get infuriated sometimes when I die, but usually the death was something like "Well, that'll teach me to try to check around corners," or "Damn, that guy with me just ran off a cliff hidden by the camera going for that chest. Better make sure I watch my footing." I found Demon's Souls to be WAY better just because the co-op was more easily done, but the games are very beautiful, very atmospheric, the narrative is told in a very intriguing and quiet way, and like I said, they're very very fair.
It doesn't feel fair at first, but I think the Souls approach to difficulty is less "Ramp up slowly, walk before you run," and more "THAT'S RIGHT ************, YOU BETTER WATCH THE FUCK OUT." Then you watch out and it's like "Great job, here's a sword." Or you don't and it's like "WHAT DID I SAY!?" I never found expertise to be what Souls was demanding, but caution and awareness. Most games lean way more towards power fantasy than the Souls series does. In Souls, the feeling is more "The world is fucked up and grueling, but with thoughtfulness and will, you can be great!" Your usual power fantasy gameplay is usually telling you "You're great! Go get them! Uh oh, that one looks tough! Ah, you got it, brotagonist!"
Plus, fuck man, that gothic theme (in terms of architecture and soundtrack). Incredible! Haven't heard such good music since Infinite Undiscovery (I <3 Motoi Sakuraba).