Dwarven Abilities:
  Infravision: 60 feet
  Detection: Grade or slope in passage - 3 in 4
             New construction          - 3 in 4
             Sliding/Shifting walls    - 4 in 6
             Stonework traps           - 3 in 6
             Approximate depth         - 3 in 6
  Combat: Gains +1 to hit vs. half-orcs, goblins, hobgoblins, and orcs.
          Gains -4 AC vs. ogres, trolls, ogre magi, giants, and titans.