Flipping through it, there is very little rules info for PCs. There's a good amount of lore. There are plenty of allies and villains.
There is some stuff, though. It's just hard to tease out without knowing it's there:
- Half-dragon (I didn't notice a half-demon/devil)
- Quasits as familiars
- PC vampires.
- More I'm sure, but they don't have their own section.
Thaumaturge.
PC Vampires? I've a player who wants to play one -- do they have an LA, or something else that might keep us from throwing one into the party?