I recently started playing Demon's Souls and I already realized why the game is praised so much after playing couple hours.  It really punishes you not because of its difficulty level but just because you make mistakes such as late rolling away from an enemy or not guarding when you're supposed to.  On the other hand, for someone who makes a lot of mistakes especially with this kind of game play, it takes its toll on me.  When my character dies in the game, I know what I did wrong and I correct that yet it takes a lot of time and patience.  Moreover I am prone to heedless mistakes as I want to eagerly advance in the game.  Overall, it is a great game but I am very curious if I will be able to complete it with success.