I'm going to be adding a natural ability for all races, but Dwarves have the natural ability of Forge Touched which makes their bodies temporarily more resistant to intense heats or non-fatal blows. They can still be hurt, but they are capable of ignoring pain for longer than most races at least in this regard. This is particularly true of burning. As for other skills, is Berris skilled in the forge like many of his kin? Perhaps some more roguish abilities would work for him? Is he a marksman or quick at the draw (fast reflexes). Skills aren't set abilities in the way spells are. They are more just what your character is talented at since we aren't rolling or anything. 

They are also more prone to know/figure out history relevant to stone-work throughout Ithea. Were you thinking of Barris hailing from the Viguard or Ostguard empire?