I think people oversell Demon's Souls difficulty. It has a few parts that may get you (for me, it was Flamelurker, King Allant, and the 5-2 swamp. No real trouble anywhere else, and I was a melee only player). It is punishing if you do something stupid to get yourself killed, as it sends you back to the beginning of the sub-level and you lose all the souls (XP) you had accumulated unless you can make it back to the spot where you died and touch your bloodstain. But all this talk about Demon's Souls is a game for "true hardcore gamers" or whatever kind of just makes me roll me eyes. The basics of the game are easy to pick up and remain largely unchanged throughout the game. You may need a small bit of help on two things: Where to spend souls to level up your character and what weapons to use (and how to level up those weapons).
It's a good game. It's not perfect, and it's not the kind of game I want to play all the time (the atmosphere gets old. Other than the Shrine of Storms, it's almost always dreary and there is no music outside of boss fights. The lack of music really feels odd, even though it makes sense. Audio cues can help you hear enemies around corners). So I won't be getting Dark Souls any time soon (especially since I heard they are going for even more grimdark). I'll likely get it eventually, when my personal grimdark fatigue meter resets.
It's a good game. It's not perfect, and it's not the kind of game I want to play all the time (the atmosphere gets old. Other than the Shrine of Storms, it's almost always dreary and there is no music outside of boss fights. The lack of music really feels odd, even though it makes sense. Audio cues can help you hear enemies around corners). So I won't be getting Dark Souls any time soon (especially since I heard they are going for even more grimdark). I'll likely get it eventually, when my personal grimdark fatigue meter resets.