Percentage rating of a stronghold's completeness, with Fupa reported at 80% on entry.
The system announcement on arrival reads "Entering the Fortress of Unyielding Power and Authority. This Edifice is at 80% Strength" — telling Carl at a glance that the Princess Posse's seat is still a work in progress. The unfinished state matches what he sees inside Fupa: hastily built and mortared walls, a shoddy exterior door, an empty Throne Room with no throne, and only a handful of workers on site because everyone else is out reinforcing the borders during The Ceasefire.
Stronghold completion metric shown on entry, gating how much punishment the castle can take.