I have uploaded another video if anyone interesting. The wad shown in the video is actually a slightly revised wad of main.wad which is the first ever map that I did back in 1996, long before I did the level design for Skyscraper map pack on Quake 2 (the link for that video is also provided). This wad is known as main2d2.wad for Doom 2. I have enabled the high resolution textures and risen3dpack in this video. The doomsday engine I have used is the recent 1.15.6 build.
Main2 with Risen3DPack (Doomsday Engine):
Skyscraper under Berserker Quake 2: