I'm impressed.
Great graphics, great voice acting, great pacing so far, and an excellent mood.
The stealth gameplay would have been worth it alone, but coupled with the amazingly simple, but fun, combat system it's looking like a really solid title.
It reminds me of Bioshock in a way, although with cutscenes. Speaking of, is the intro in real time? Looks like it, but the framerate is too good, so I doubt it.
I thought the standard movement controls were a little awkward at first, but I got quickly used to them. Combat is a blast, and you feel really powerful even when fighting many enemies at once. I didn't get a chance to fight the armed dudes, but I got shot at a few times, and it nearly killed me. I like that.
What stole the show for me was the Silent Predator gameplay. Stalking the guys, playing with them - seeing their pulse rise, their status change, is incredibly cool. After taking down all but the last guy in the final room, I just followed him around, seeing him get increasingly paranoid. He even jumped and fired off a few rounds out of terror when a nearby boiler let out a little steam :lol