One word, meh.
I've always loved the Doom formula/video effects feel.
I had high hopes for this release, but like so often in the past, they refuse to allow exploration like found in Quake, Borderlands or any of the other great FPS genre.
Doom forces you to point A and then B, never once allowing for a jump to point I or beyond, they've tied themselves down with the seek and find puzzle bull shit, and forgotten their audience sometimes just likes to kill, explore, snipe from afar.
No, Doom misses on so many levels. I don't see much replay value in this game, I'm almost done and I highly doubt I'll play through the entire game again.
Sad, it looks so good too...