Only played through 30 seconds of the demo. I'll get around to finishing it after I get home tonight.
I like what I see so far. The atmosphere is well-done; it's creepy. I grab the health booster and see a shadow move, I spin around and see a little girl dash past. I follow... and find an empty blind corner.
Running on an AthlonXP 2600+ with a heavily overclocked (but not unlocked which puts it at an overclocked 6600GT's level) 6800LE I've most of the settings at Medium, Maximum Shaders, FSAA 2x and 1024x768.
Nominal FPS is 40ish but I think I'll have to turn off the FSAA.
I love the shadow effects. What I've seen so far is very effective. I also fired a shot at a fire extinguisher and killed myself.
Oh, and lamp on hat == the win