My players will be uncovering the location of a Talisman of Vaul soon. There needs to be something/someone between it and them. They can't just walk over this part of the game. Normally, as mentioned elsewhen, I make stuff up during the game. This won't do this time. The path to the BF is roughly this:
Secure crashed Eldar starship from Hereteks. The webway portal on the ship has been repurposed (with a good chunk of Adranti technology), and now leads to the vast Augustus Stern -class Star Fortress Eventus Noctem (similar to a Ramiles-class starbase , but larger) filled with rogues, hereteks, cultists, outlaws, and assorted scumbags. They've taken over the abandoned facility, and someone in there knows the location of the Talisman . Getting to him shouldn't be too difficult, but resisting the urge to cook everyone on board? That will be hard.
Eventually, I suspect they'll sabotage the fort's fusion reactor, escape on a warp-capable vessel of some sort (fitted with a heritical Adranti Auto-navigator) and make for the Blackstone Fortress itself.
How much more resistance to their efforts should I offer? I want it to be a good fight, but obviously, this is the end of the first arc of our game, the one we've been working toward for a year.
I have DotDG, so suggestions from that book are welcome. I have my own ideas, but I thought I'd ping you folks for a bit of variety and possible overkill...