Let's see a picture of your 'promo copy' then as is required when discussing full versions of unreleased games.
This really is a fantastic game, best I have experienced in a long time. Played it most of the weekend and finished it last night, was that hooked. Great story, looks amazing and really enjoyed the combat system. Seems a funny thing to say, but the gore, the language used, and the character reactions all added up to quite an 'adult' experience that I had no idea the game would provide, was really impressive (hadn't played the demo or seen any vids).
Regarding the comments about difficulty - I played on normal setting and found it challenging enough, certainly 'felt' right to me in terms of damage you have to deal. Died a LOT finding best ways to kill groups of enemies, particularly clickers! I agree with other posters above regarding higher difficulty and the amount of damage it takes to kill an enemy - it would feel wrong in my opinion, but each to their own.
Completely agree with those about listen mode etc - if you want to make it more challenging then switch it off, way more intense. I would do the same for game hints and tips too, as it does spoil it a bit having things pointed out that you ought to have to figure out yourself. Finally, switch off melee prompts as well if you really wanna go all out.
Promo doesn't contain an online code so haven't been able to try multiplayer.
Was so impressed with this I've grabbed a copy of Uncharted 3 to try, hopefully it's good too!
Enjoy it guys, you won't be disappointed. Don't forget to play with the lights off and the volume up!