Wet Willie Trophy in Adventure Time: Finn and Jake Investigations
Find out why the Fire Kingdom's flames are going out.
How to unlock Wet Willie
This trophy is story-specific and cannot be missed.
The first part of this investigation is in the Fire Kingdom, once you get to the core, you see that Starchie has an uncontrollable magic device. Once you gain control of it, a cutscene will follow. The trophy will unlock soon thereafter.