Phew! Just completed it on "Veteren", my verdict:
Awesome graphics engine, awesome sound and an atmosphere dripping with tension. Best game ever, but then I am a massive Doom fan
My only gripe is, where is this guy (Baron of Hell)?
And why did they take out the brilliant mechanical leg noises the Pinky demon made in the Alpha leak?
Oh well, can't wait to replay it when I get an X800 XT