Interestingly enough, the Draug have incredibly poor eyesight, which probably should make them terrible adventurers. But in another clever City of Steam twist, the race compensate for their bad vision with bursts of sonar to "see" around them. That's right: The Draug are bat-men. And bat-women.
A dev journal on the Draug talks about how this echolocation works both for and against these batfolk. While they have an advantage in low-visibility situations over normal folks, they're more blind than usual if there's a lot of noise nearby.