I didn't mean individual lairs, but rather a group castle or keep of some sort, but it's cool. 
I didn't mean
individual lairs, either, Vergil... but you are welcome to try to capture your own castle or keep for party use. Every aspiring BBEG needs a place from which to take over the world.
Okay, here's the party line-up, in order of posting. Let me know if there are any corrections:
- Brittlby, Female Human Bard
- RubySlippers, Female Fighter
- Vergil1989, Noble Tiefling Sorceress with Draconic Ancestry
- Snake, Tiefling Rogue with minimal Demon Traits
- Raveled, Paladin/Death-Cleric angling towards Lichdom
Comments:
Bards don't come out to play very often, so I'm delighted to see one in the mix. And I like what you've made Brittlby. As I mentioned, this is a great campaign for it - especially when you combine the high charisma, versatility, overall knowledge, arcane tendencies and just general roleplay-ability! Plus, she is cool.
The female fighter is a solid addition. She will undoubtedly have her moment to shine and can carve a nice niche for herself within the group. I have a picture of her in my head already, which is capble, gritty, somewhat rough and unlady-like, so I'm keen to see what you bring to the table. This looks like a very agile group, so I
strongly recommend travelling light and mobile instead of being a walking tin can so that you are not left out of any escapades.
The Tiefling Sorceress will work quite nicely too. I like this as a choice for a primary spellcaster and expect her to work in collaboration with the Bard with a lot of opportunity for her talents. As a tiefling, she will be reviled by the general population, so being able to fit-in may be a key to her survival. Hint, hint.
The same applies to the Tiefling Rogue, who is yet another excellent fit for the group. Having a Bard and a Rogue in the group will yield a massive amount of skills and they will undoubtedly back each other up very nicely. The demonic taint is a nice touch that will come into play later and the ability to bluff and deceive cannot be overstated in a storyline like this.
Last, but by no means least, what group would be complete without a religious nut of some kind?! The whole death angle is something this campaign will accommodate very well and the divine energy will be a critical factor. As I mentioned earlier, I
strongly recommend travelling light and mobile instead of being a walking tin to avoid being left in the cold. We will also need to discuss your deity in some detail as you will be commencing the game having had a
genuine interaction with a proper, in the flesh, scary-as-hell, Demon Lord.
Speaking of proper, in the flesh, scary-as-hell, Demon Lords; I have an impressive introduction planned that will set the tone for the storyline and shock you all into submission. Literally and figuratively. So be warned and be ready to cast a few expectations to the wind!
Also, I notice that there's not much in the way of survival in this group. Survival isn't the be-all-and-end-all but it is damn handy, so I recommend considering your options and/or allowing for some survival with your choice of resources as we go.