Could you post a walkthrough right away (well, not the whole thing, but the first 30-50%)? Because there’s a manual from WSW (maybe its author has already finished writing it completely or, at least, further than what I saved sometime back in November 2015). It’s a document with pictures in PDF format, weighing 6 MB.
And we can simply discuss the map in the thread "Walkthrough of custom maps," where it was also discussed before.
(Василь Симоненко. Люди – прекрасні)