Luigi's Mansion 3 offers players a charmingly spooky adventure filled with clever puzzles and hidden secrets throughout the Last Resort hotel. Among the most complex zones to fully complete is the subterranean B2 floor, widely known as the Boilerworks. Gathering all six hidden jewels in this watery labyrinth requires sharp puzzle-solving skills and a masterful command of both Luigi and his gooey counterpart, Gooigi.
Unearthing the First Hidden Stones
The journey begins in the early corridors where manipulating the local machinery is key to revealing hidden paths. In the Reservoir area, players must utilize Gooigi to slip through metal pipes while Luigi controls the primary water valves from above. Solving this introductory puzzle drops the local water levels, exposing a paint bucket that can be thrown at a nearby wall switch to reveal the clear gemstone.
Moving further into the main valve chamber, another treasure awaits those who look closely at the background architecture. By utilizing the Suction Shot on a loose metal grating, Luigi can open a small passage leading directly behind the active water pipes. Sending Gooigi through this passage allows him to collect the red jewel trapped inside a glass container.
Navigating the Trapped Corridor Challenges
The central drainage hallways contain multiple environmental hazards that require precise timing to bypass without taking damage. In the main storage room, players will notice a strange glowing light hidden beneath an old wooden crate near the corner. Breaking the obstacle with a nearby plunger exposes a hidden floor grate that leads directly to the yellow jewel.
For the green treasure, players must head toward the observation room which overlooks the massive central pump mechanism. A strategic vacuum burst near the upper electrical panel activates a hidden crane pulley system outside the window. This mechanism hovers directly over the flooded floor, lifting the sparkling artifact safely into reach for your active team.
Cracking the Final Vault Encounters
Securing the final two collectibles requires a complete understanding of how to combine the special abilities of both characters concurrently. Inside the sewer main line, a hidden pipe entrance sits high on the right wall, accessible only by launching a suction shot at a loose valve wheel. Once the path is clear, can guide Gooigi through the darkness to claim the purple stone from the sewer rafters.
The ultimate challenge rests in the boss arena itself after defeating the resident ghostly mechanic who guards the floor button. Players must return to the lower drainage tank once it is completely emptied of water to find a hidden manhole cover. Prying open this circular vault exposes a secret treasure chest containing the final blue gem, bringing your total collection to absolute completion.