Gaming does not get any better than this.
The big difference with this game is the open world and there is no more central hub (nexus). Everything is linked by firepits.
There is a massive variety of weapons, enemies and the bosses are a blast, just don't mess up a move, or your dead.
This game bleeds atmosphere. No game does it better. Graphics are amazing, sound is amazing, especially if you got a good surround system.
Dark Souls is NOT as hard as people say it is. Its very fair. You just gotta take it slow and figure things out. Its not one of those games where you can run around carelessly. Every step has to be taken with caution. Once you figure out how the enemies work its a breeze. Just don't be careless.
I am a huge fan of the Demons Souls and had huge expectations for this title. This sequel exceeded them all. If your a fan of Demons Souls or someone who wants a hardcore adventure RPG get it now :D