I'll soon be running a campaign in which the drow wage war on the surface world. (It's Mongoose's Drow War Trilogy, if you're familiar).
Any advice or ideas from you folks, particularly from people who have had campaigns focusing on Drow as villians in the past?
I ran the first two books of this series. It plays really well, but you need to tweak a few things.
The original maps really suck. I made my own map of Chillhame, with possible routes the PCs can take to warn the locals until the big battle in Saragost.
About the Drow of Ashfar... do NOT play them like a typical D&D Drow, they are not FR Drow, they are unique. Think flamboyant Nazis. Decadent and Lawful. Try to understand the background of She.
Also, it's not important to know about the other parts of the world that much, since the PCs are "transported" there by the gods and are Starborn.
The PCs should be able to learn about the Gods of Ashfar from the local clergy in Bronce.
When you ask the PCs to choose a Sign at character Creation time, don't show them the benefits, just show the descriptions. This will prevent unnecessary min/maxing.
Early Game:
The initial encounters are really there just to get the PCs down into the mine to discover the invasion. They work fine, and are good to get the party set up as people that can be trusted. This is important once they start going south...
Play up "Jim's Boys" in the beginning, they are important to helping the PCs be heros in the early adventure.
The adventure in the mine needs to feel a bit rushed too, as the rains are filling up parts of the mine, so there may be some harried combats and quick running around.
The race south is fun, but I gave them a few moments to slow down in Lower Scumsgrove and Hockton Barrow. There are some good times to be had there, so let the PCs jump off the beaten path a bit. For Example, I gave them a gang as rivals in Lower Scumsgrove that ended up joining the forces of evil and later met them again in Saragost.
I have some handouts for the players (like a summary of the gods, the note found on the Drow at Hockton Barrow, etc). Let me know if you want them.
What system are you using to run this? 3.5? 4e?