I'm in two minds, a little bit, about this map.
The first 3/4 are really fun, a nice doomy experience.
But down the big elevator ... I wasn't able to stand this, although it's a little bit less hard in v1.01. (Some more health, ammo, armour, I think.)
Chapter 6: Hot dogs, Horseshoes, & Hand grenades, that was too much for me.
And I felt it disturbing the balance, the dramaturgy. But it's a good idea, of cause.
And after the elevator experience, the end was a little bit abrupt.
IMO, it could have been interesting if the elevator had been a little episode in the middle of the map.
Maybe it would have been more easy if I had solved the secret with the quad behind the coloured window.
So I ended with secrets 4/7, in 3th attempt and 1st attempt with v1.01.
Thank you, it's interesting. Good soundtrack!