I've sent you savegame files that Klar made for me 8 years ago. I forget where in the dungeon the party starts.
You might be interested in some of the background of this level. It was originally made as a map for Legends of M&M, the FPS that NWC made with the same engine. It wasn't used in LoMM and was recycled as NWC hurried to finish MM9.
The *real* way to go about recreating this dungeon for Heroes would be to install the LithTech 2.0 tools and examine the level in the editor, but that would probably entail a cluster of new challenges for you.