I agree, I love both games but it's casual nethack as far as I'm concerned: it's very difficult to enjoy the games without a minimal amount of spoilers.

I went blind for my first run in both games, and while I could finish demon's souls with a minimal amount of grinding I hit a wall in DaS because some upgrade paths are simply dead ends. Leveling up resistance, for instance. Certain weapon's upgrade paths. And you have no way of knowing that before you get destroyed in the next dungeon because "hey, occult weapons are useless! Tough luck".