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Everything was going well until I was exploring the surface (which, by the way, is well-designed and "not boring" with the NCF mod). But Sinadim-Naadir just disappeared from the battle at the bottom, and it was game over. What was that? I have no idea... maybe I was too scary for the undead. You could increase his stats or make the AI produce undead at the bottom like on an assembly line, so that while I'm catching all the cockroaches, I don't get too old.
P.S. The warrior's tomb in the basement wasn't used (maybe it's part of a quest, or maybe it's a bug).
Thank you for the game; I'd give the map a 4 (a "Soviet" 4).