Haven vs. Fortress (how to play against dwarves?!)

There is a rune of magical warding against vampirism. Even lava dragons start using vampirism; this has been verified in a duel. You can kill a Dwarf early on due to its slow start, or in the middle of the game because Dwarves usually have trouble with logistics. Also, the Dwarf's skill progression can go wrong: it might want to focus on Haven, but it will keep getting Chaos skills.