I thought the demo was good, except for the perplexing control scheme. Stopping and shooting is fine with me, but some of the other controls feel just bizarre. For instance, I have never before played a game where you have to press two buttons at opposite ends of the controller to reload. It doesn't work and it's not intuitive. Same goes for Left stick + X for running. I played the PS3 version, so maybe that affected the control scheme, but Metal Gear Solid 4 had far more gameplay elements, and it condensed them into a more elegant control scheme.