Have you played the alpha?
The movies do not do it justice. This is going to scare the crap out of you, just make sure you play it with the lights down and volume up.
Even with crappy AI and broken graphics it was very very eiree.
The first section where you get off the lift, the light is swinging above your head and you can hear things moaning off in the distance,.. rapids bowel movements.
Leading the "Support our Arrow keys" movement!
Diablo & Diablo 2 for the DS, it makes sense Blizzard!