Today I was adventuring with my legendary wrestler when, after entering a town to see what I could get with the thousands of coins I carried, I was ambushed after falling asleep in someone's home. I was confused, considering that homes are supposed to be safe places to sleep, when all of the sudden, the 'undead' tile set (the 'N' with the tilde over it.) ran into the home.
I immediately engaged in combat with the creature, after noticing it's name; Night Mate Spearman. I was confused, considering that it was literally just a spearman, same clothes and all, but it was considered undead. I figured it was a vampire and proceeded to attack.
The people in the home woke up after about two turns, and I let one of the stupid ones run in front of me while I sorted through my backpack for my knife. The spearman annihilated the villager in only two turns, but I had my weapon.
I engaged in a wrestling hold on the spearman's weapon, jostling it from him. It scratched and bit me, however, I was too powerful for it; I began to stab it forcefully in the head, knowing that vampires don't go down easily.
I was incredibly shocked when, after getting a message that I had 'Bruised the Brain' with my hit, the spearman broke free from my hold and proceeded to punch in the head, causing the 'severed part to fly off in an arc!'
I stared at the screen for a moment in utter confusion. First of all, I know that vampires CAN be killed by brain damage (or, more so, they used to be.), and vampires also aren't supposed to get special names; It's just their human name. As well, I've never seen a vampire strong enough to cause an insta-death from a punch, unless they were buffed massively.
Was this just some odd creature of procedural generation? Or is something around that I really, really need to look out for?