thank you for letting me know, but none of those let me know how to build the breeding pit to get the Driders. I am guessing it is behind a research but I don’t know which it is behind (I am starting to think it is behind the military stuff).
Edit: I managed to not get a game over, I took Reave Keep probably a few turns before the point that led to the game over. I built the Tavern first, then the Dark Sanctum, then the Forge, and then the brothel, the arena came after the deadline. I also only spent money when I needed to, I forget the order of research I did.