Useful work per trip
The goal is not a claimed currency rate; it is reducing trips that end without a confirmed objective change. Carry known cross-room objects when you already plan to move, but do not turn every uncertain item into a mansion-wide search. A short room queue keeps each action connected to a visible result.
Close loops before opening new ones
A half-washed object, an unconfirmed placement, and a new room survey create three unresolved loops. Close the most certain one first, then continue. This makes the final missing task easier to diagnose and keeps co-op players from repeating the same work under different assumptions.
Use upgrades as experiments
Name a bottleneck before purchasing, then observe whether one full room cycle changes. If travel becomes easier but missed dirt still stalls progress, the next goal has changed. This method stays useful even when prices or numerical effects change because it is based on your current task state.