Well, my buddy Ryu finally played it, and after hearing his impressions, I had to pop in my demo too. I've had it for a bit over a week but hadn't touched it yet. He's by far the most hardcore MGS fanatic of my little coterie, so hearing his positively underwhelming impressions (especially after the hard time he had in securing the demo to begin with) I just HAD to try. (I'm the resident MGS hater in the group, to be honest.) Even though my opinions of the series have softened a bit.
All in all, my impressions weren't quite as negative as his, I think. The music was disappointingly nonexistant, the background graphics are pretty fucking bad, and the camera was VERY fucking bad. But one thing which always intrigued me since its conception, the camo rating, turned out pretty frickin' nifty so far. And I had a bit of fun hiding in the grass with 95% camo rating and sniping the morons off the suspension bridge, for one. Or climbing to the top of one part of the factory's roof and sniping some guards. Or hiding underneath the raised floor of the factory and killing me some snakes and mice (and guards.)
That is, after the atrociously boring first 15 minutes of bullshit codex cinematics.
It's got a ways to go, but if it keeps up, it has to be better than MGS2. Ugh.