Some thoughts after 2nd listen, not native english speaker, forgive me. :-)
And the sky began to scream - is there manipulated "I can't" from previous track? Interesting different melodies going on at the same time.
Welcome oblivion - one of the sounds reminds me probably "Fuel" (Front 242, 1993).
Too late, all gone - OK, here we are, this one is EPIC. Ghosts, Capital G, Everyday is exactly the same, Great destroyer... so many different effects on voices and not just some random "record pattern - repeat during whole song", amazingly builds up. Must have been tons of work. It feels like I and the song already met before, in a good way. I could listen to 20-minute remix of this with great pleasure.
How long - this is unbelievable production, I literally got shivers... I thought only Alan Wilder can do basslines like in the verse, there are so many sound layers (I wish Depeche were still able to do this, not happening anymore), and even Peter Hook stopped by to throw in a few notes. :-) The singing felt a bit too poppy when I first saw the video, but no, it's perfect. Note how the voice is in the middle of your head, then separated to complete left/right side.
Strings and attractors - I feel it slightly speeds up at some places which I generally don't like, but similarly to Too Late, it's like it is purposely not completely pleasant for a while, so you can later enjoy the climax of chorus (refrain?) that much more. Ends suddently, like HTDA sometime does. Contains Atari 800 XL percussion. :-)
We fade away - again a bit of the trademark howl (wail?) like in the song which attracted me to NIN years ago (We're in this together) or somewhere in TSN soundtrack (Painted Sun - Complication duo, btw they're great), more mellow track, imagine "breath... us in... slowly", HTDA remix 2013.
Recursive self-improvement - game soundtrack, also maybe speeds up sometimes, and the "dramatic" volume increase near end is a bit too much (yes I have volume control:-).
Hallowed ground - the bass-like synth line which repeats the whole time kinda reminds me 1-bit music on Sinclair ZX Spectrum (to be specific, game Trantor, edit - actually I ment Chronos, if anyone remembers), and on different topic I can imagine Trent starting to speak "They're starting to open up the sky" (btw, Zero-Sum has the best rhythm in history of known Universe for me), but then it develops to something else... or, actually, it doesn't develop much, but it's OK like that. :-)
So, the standout tracks for me are now 1 - 7 - 8, but overall it's very pleasant ride and I would not leave out any of its 13 stops (or, maybe just one, but it's still soon after 2nd listen). We have only 1/6 of year behind us, but if Delta Machine even with Flood's help does not happen to be their best since Ultra, I already have my album of the year. :-)