Carl's achievement for killing a settlement's magistrate — granting a Platinum Tyrant's Box and control of the town.
Alongside Assassin, the same blast that kills Miss-Quill earns Carl 'Ultimate Extreme Power!' — the system dryly comparing him to Charlemagne ('It's only a medium settlement') before welcoming him to 'the wonderful world of public administration.' Its reward is a Platinum Tyrant's Box plus control of the Medium Skyfowl Settlement, changing his title to 'Magistrate Carl of Medium Skyfowl Settlement' (which reverts on floor collapse). In practice the town's swordsmen guards never truly recognize his authority.
The achievement that briefly makes Carl a town magistrate and hands him a Platinum Tyrant's Box.