In the world of Algennon humans are at a worldwide societal level equivalent to the Middle Ages. Humans also are divided into two subspecies: the Bellators (homo sapiens bellator) and the Plebeians (homo sapiens communis). See this document for further info
The Crabozz is a lumpy crustacean the size of a volleyball. It has four sets of legs and two pincer arms. The shell can open from the front like one of those asparagus steamers to reveal its mouth, extremely sensitive scent-antennae, and eye. It spews flaming hot jalapeño bile. The shell is very hard and spiky. Most stabbing weapons don’t work on it. The only thing bludgeons will do to it is knock it a few meters away.
Artist's Impression (Based on Skyrim Mudcrab)
Given this monster’s abilities and Medieval level technology , What strategy would medieval people use to defeat a Crabozz?
Extra info about Crabozzes:
Crabozzes live in gully areas by rivers or lakes, since this is where their eggs are laid.
They can scuttle around at speeds a little less than that of a human.
They organize in bevies of about 13-20. The females are the hunters, and the males are the brood-watchers.
Their aggression toward humans arises from their superb sense of smell: they can smell all the delicious foods that humans make, AND all the food they’ve recently eaten. So they attack human towns as a result.