This looks incredible.
I made a version of Nacht Der Untoten back in the Halo 3 days, made an updated version on MCC H3, and obviously with the forge tools and limitations back then, it was never possible to make an exact replica of the map (spacing, aesthetics etc). I later made a version on Halo 2: Anniversary but never finished it due to the short lifespan of that game, but that palette was amazing for making a Map like Nacht Der Untoten. Especially with all the sandbags, the concrete textures, etc.
I spent a weird amount of time on CoD: WaW no-clipping around the map to look out aesthetics (indoor and outdoor), so I feel like I know that Mao inside and out now.
From the pictures you've shown, even from the very first one where you show the broken arch, I could tell this was going to be an amazing remake. The 6th picture was the "oh ****, this is definitely a good remake" moment for me haha. Lighting and everything looks great.
It's also a bonus you did the Blackops 1 version (with the perk machines).
I'll definitely be downloading this and running around in customs looking at everything haha.
Great job. :)