Decided to allow a form of martial arts in my fantasy world. Explanation is that people who choose to be guards are permitted to look into any ways to defend the city (believed to be the only one in the world due to the permanent silence), from creatures that sometimes wander in from the outside. They range from the size of wolves to human-sized, but no bigger. Meaning the majority of guards use pikes for their reach while some can opt for swords or more outlandish weapons.
One of these will be people who wear metal gauntlets and greaves and focus entirely on upping their strength in those muscle regions for speed and power. There are two prominent guardsmen using it and they each have their own method. One emphasizes quick but brutal strikes to monster weak points while the other draws a monster's attack in then breaks it, usually with the offending limb, until the threat is disabled or dead.