Not as scary as it was intended... maybe because the shadow is so overwhelming in the image. Maybe that was the idea, to provide some space for lettering and credits, but I feel it does more harm than good.
There's no story here, but a really scary setting, and a very strong horror style, reminiscent of German expressionism (a la the Cabinet of Dr. Caligari and Nosferatu) but still an individual style. A must-see! Let me know when it hits the theaters...