Evilthing is the first of several Monster Hunter's Contracts, which are intended to be simple drop in contracts that consist of a contract poster, contact character, investigation phase, battle phase, and aftermath phase.
In addition to this, each contract introduces a monster, monster variant, or a custom strategy for several monsters to use, and at least one piece of something that can be extracted from the monster and used in crafting.
Lastly, it comes with an in-universe description of the monster, that could possibly be discovered elsewhere during a campaign, or otherwise searched for.
The Contracts are written for a relatively grounded non-specific dark fantasy setting, which occasionally has the chance for events of epic proportions, or deciding the potential fate of nations.
This is not one of those, and is instead designed to be a straight forward grass roots level monster slaying contract, offered by peasantry whose lords and security are either gone, or uncaring.
- from the publisher's blurb