This was a request by someone. Here we have an Iron Dwarf in full battle armor and armed with a repeating crossbow and a hatchet as a side-arm. It’s face is covered in a magical leather mask designed to stop poisonous spirits and vapors from affecting the warrior. (or in real-world terms: a gas mask)
Iron dwarfs are the blacksmiths and warriors of dwarf society, wielders and inventors of Iron, the metal of Death. One must remember that in Glorantha, Iron is closer to the concept of Mithril from Tolkein’s work, than our real world iron.