Norse dwarves should have Ritual [-2] with specialty in Creating.
Would usually be "Potions" but generally in the form of one-use trinkets or baubles with runes on them.
Sunlight would be a catch/vulnerability for full dwarves, as would greed, and being harmed by things they owned would likely work against any defensive powers.
I am thinking along the same lines, but plan to "tweak" it a bit, possibly adding Worldwalking (aka, half-blood raised in the Nevernever)