Just completed the map, took me 56 minutes but I actually had to play in two sittings as my PC started overheating just around 45. Great one as expected, sewers and cliffs reminded me of WGCity a bit which itself reminded me I still need to play the sequel to that map, but now this one got me very much in the mood, so I'll try that one out next. Layout work was absolutely fantastic, not just technically speaking but the progression I thought really worked, I never got stuck but around the beginning where for a while I failed to locate the first blue key but that was fun searching around all the terrain and figuring out where it would be. (I had found and reached the balcony early and didn't see the key and so it took me a while to come back and realize it was indeed there, I assume it respawned after I entered the building correctly. Later I was similarly confused by a door in one of the rooms which seemed to trigger automatically and open late, but I wasn't sure of the trigger or what exactly happened, worked me for though, didn't waste time.)
I also really liked all the little tricks I saw in the monster placement with one calling the next, the 'compatibility' in the combos or the more seemingly anecdotal, but important things like the slimer drawing attention away from the tank, encouraging using the shrinker just prior to sudden Newbeasts or all the plays on the mirrors. Was on full if not Atomic health for the most part of my playthrough until the very end where I started struggling but could always go back to earlier places to try and retrieve loose medkits. Map was fairly generous (so generous, but fair) with ammo and the weapons were distributing in an interesting manner.
My favorite part about it I think is how just the first couple of unlocked rooms in, the logic clicks and the level just takes you around as you now trust it with that.
Was playing on CGS, apparently got all kills but only found one official secret, it had so much stuff in it though.
I found a handful of tiny bugs/minor issues:
https://i.imgur.com/Qi9sMmW.png
No idea if you can see this sprite that is buried well underground in Polymost but it exists and can be seen through the floor in classic.
https://i.imgur.com/hy5soLm.png
Wall around this rock seems blocked by mistake and so Duke can't jump over it from here.
https://i.imgur.com/wZyt7Uh.png
Switch clips the wall, I'd imagine not an issue in Polymost (?) but maybe looks weird as it's the only one I've seen that does that.
https://i.imgur.com/jpMbjO7.png
Floor pal of the alien sector is 14 and so the enemies keep flashing between normal palette and dark green, maybe it's for style.
I also took some screenshots of places and moments I liked a lot.
Website is forcing Imgur links onto me right now as the attachment upload feature is bugging out and so I'm posting direct links which I reckon should be fine in order to avoid spoilers (gotta really want it now).
https://i.imgur.com/x3oe8mu.png
https://i.imgur.com/bpY4Mws.png
https://i.imgur.com/oJWDU0Y.png
https://i.imgur.com/RmvTIMY.png liked the texturing so much in the bathrooms, I washed my hands
https://i.imgur.com/stNrsXe.png
https://i.imgur.com/bn7t3cq.png
https://i.imgur.com/BpAYNx8.png
https://i.imgur.com/IxELvFt.png I swear I might end up taking a similar screenshot at every Duke 3D piano
https://i.imgur.com/He9saAp.png
https://i.imgur.com/bfsoQqV.png
https://i.imgur.com/6MNbGwL.png btw not sure if one of those tripmine traps was meant to be particularly hard to avoid, but one (not this one) seemed almost impassable before I tried a bit harder
https://i.imgur.com/YD6Pchh.png
https://i.imgur.com/xumu4rK.png found the sweet spot