I've been thinking about Armok, the Blood God himself, and how he ties in with the Dwarf Fortress universe (Unrelated to the actual game, of course, since he doesn't actually appear in-game.).
First off, what exactly is Armok? His title "God Of Blood" makes him sound like a savage war-god, that craves battle and death. Or, perhaps his title also has a double meaning. In ancient creation myths, all living things would usually be created out of inanimate objects, such as the earth, clay, stone, mud, only to be brought to life by some sort of life giving substance provided by the divine. Perhaps Armok filled the lifeless creations with the precious life fluid, and thus, his title, "God Of Blood". This would also fit in with the in-game mythos of Armok being a god of creation, in addition to his, strongly implied, position as a god of battle and/or protection.
Secondly, if Armok truly is just a, one-dimensional, cruel and savage war god, then why would he be the patron god of the Dwarves, of all races? The Dwarves are known for military might through the construction of fortifications (Because no other race can seem to figure out how to carve a slit through a solid stone block) death traps (usually involving magma), and forging tools of war with steel and the legendary adamantine, but these are usually measures taken for defense against the constant goblin assaults, and horrible beasts attracted by their wealth, instead of being used for conquering the innocent. Also take into consideration the general lifestyle of the Dwarven people. They are a race that takes pride in their great industries and artistry, often including a immense,and incredibly diverse number of different industries operating out of each fortress, often decorating the halls of said fortress with statues and engravings.
They're also noticeably more advanced than every other race. They build complex mechanical infrastructures, utilizing levers, pressure plates, and mechanisms to control a series of drawbridges and floodgates, allowing them to directly control the flow of liquids, and construct security systems able to keep entire sieges and raging megabeasts at bay. They use windmills and water-wheels to generate mechanical power. They're also able to both, construct mechanical water pumps to transport liquid, and use said technology to purify flesh-dissolving demon toxin, into perfectly safe, drinkable water. All of these things, no other race in is able to even come close to doing.
Overall, Dwarves are pretty much the exact opposite of what you'd expect from a race based on war and conquest. The race that fits the "War and conquest" thing, pretty much perfectly, are the goblins, so honestly, it sounds like Armok would be a more fitting patron god to the goblins than the Dwarves (If Armok is, indeed, nothing but a cruel and savage god of war, anger, and death.) I would've thought the Dwarves would have a patron god of industry, or fire and forge, stone and ore, trade and wealth. Pretty much any god is a better fit for the Dwarves than Armok.