Well first of all I wanna congratz you
it's look quite amazing really
Now my C&C:
-the view where you can see the ammo of all your guns is abit
annoying, it's hanging there somewhere in midair so try and put the
view in a corner or sort like
-The blood effects can be even 'worser', I mean that when you are hit or the enemy is been hit you could me him bleed like hell and that reminds me when your are shot, try to 'stick' the blood to the walls or
to sort like when it emerges out of a body
-I think you could make the elevator even better, I don't really see the difference between the walls or the elevator, so try to make it look more like an elevator
-For screen 15, try the give some more background creativity
-But for the rest IT'S like I already said, fanstastique !!!!!!

I hope your creative mind agrea's with my 'creative' mind

Cheers

Frazzle