So in Dwarf Fortress I had recently settled on a site that contained some pretty nice mineral wealth, with abundant tree and a nice brook filled with fish on one side of the hill. However, on the other side was a haunted, cursed landscape where rust red blood rain drizzled upon my team of seven dwarves as they trampled upon tufts of eyeball grass. Soon, huskified monsters- former dwarves and animals twisted and reworked by the evil landscape to thirst for flesh and blood- would come and devour my dwarves. I had to quickly get them into a shelter, and fast- my two military dwarves, armed with measly bronze short swords and wooden shields, would not hold the undead tide off for long. A glimmer of hope was on the other side of the hill- a ready made kobold cavern with a secure passageway and safety from the outside world. Despite it's modest accommodations (the rooms were very small, and could hardly fit 5 beds) it would protect us from the coming horde of undeath. The problem was it's occupants- innocent kobolds who were trying to make a living by scavenging and fishing.
But you can't think about morals when your people's lives are on the line
I drafted all seven of my men and women into a military squad, giving them any weapons on hand- some used the bronze pick axes we took on the journey, the two soldiers used their axes, and the three left used stones or their bare hands. We pushed into the kobold settlement at midnight, taking them by surprise at the dead of night. The first three kobolds we saw, a digger, a fisher, and a leather crafter of some sorts, were all taken by surprise. Two soldier dwarves pounced on the digger as the other two kobolds were tackled and held back by the 5 remaining dwarves.
The kobold digger, screaming and thrashing about, was going to alert the rest of the cavern to our presence. One swordsdwarf, her name Likut Onordor, took her bronze blade and ran it across the kobold digger's neck, silencing the worker as her comrade held him down. They let go of the digger and let him bleed, and as the kobold's life was gushing out of his neck onto the cavern floor the last thing he would see would be his two friends getting run through the gut with bronze swords.
By this time the rest of the settlement had heard the scream and gotten up. All 43 living kobolds get dressed in their tatters and rags and tried to run away to the deep caverns. When this failed (the passageway had just happened to collapse that day) They tried to run away to the surface. Most of them were cut down in a choke point on the second floor of the cavern, where the two swords dwarves and the two miner dwarves killed or maimed everyone trying to get through. Eventually, the last 8 kobolds remaining hid in the corners and pits of the cavern. A hunt began to search for these last stragglers.
Three of the kobold stragglers were found in the morning. A young female kobold alongside her father and her fiancé were found hiding in a fish storage room on the fourth level. The three civilian dwarves who were armed only with sticks and stones found the three kobolds. They beat them until the three kobolds were black and blue and they were tired, and after they rested they beat them again until their bones were broken, and then the dwarves rested again and beat them again until they were almost dead. The dwarves had grown tired of this so they just tossed the three kobolds outside and left them there.
Four kobolds were found by the two swords dwarves about half a day later, on the ninth level (the deepest level of the cavern.) It was the kobold hunter, his wife, and their two children- a son and a daughter. When they had encountered each other the kobold hunter knew they were coming, and had prepared a trap for them. When the female dwarf set off a trip wire in a stone hallway, a small boulder came crashing down on her, smashing her left knee, shin, and foot, grinding the kneecap and all the bones under it into a coarse powder. As the young swords dwarf writhed in pain inside the dark cavern, her compatriot came to help her. As the male swords dwarf Urist ran down the hallway, the kobold hunter tried to stab him with a cow bone spear. The dwarf parried it and ran him through with his sword, right through the gut. They carried the kobold and his family away and wrapped his wound in cloth soaked in vinegar. In retaliation for the crippling of one of their soldiers, the dwarves strung the half-dead hunter and his kobold family outside by their necks on iron chains until they were dead, and left them there until the bodies began to fester.
The last kobold was found a week later,already rotting. The kobold, evidently the mother of the kobold hunter whom had been killed 5 days before, had slit her own wrists and bled out in a cupboard on the tenth floor. Her body was thrown out into the same mass grave that held almost everybody else.
4 months later new dwarves and most of the old ones were cooking mushroom and beef soup in the kitchen while dwarven doctors were teaching Likut how to walk with crutches and 4 skeletons were hanging by iron chains outside near the entrance.