[02/16/22 update: New map added, "Vanquilodepolis".]
You wanted it, you finally got it (and I've wanted it too): Height variation, differential shading, non-square based architecture, dynamic lighting, ambient sounds, textural variety, and random sounds. Initially this was based on the Kill Them All project in the sense of following the rule of having 100 polygons per level max, but over time it seems I could not stick to that necessarily. :3 However, I have made many of these maps from a 700-polygon template I made (you know, 700 because 7 because Marathon).
New map, "Vanquilodepolis".