Navigating the murky depths of the Boilerworks floor in Luigi's Mansion 3 requires both clever problem-solving and full utilization of Gooigi's unique abilities. The B2 level hides six distinct gems that test your environmental awareness and mechanics mastery. Finding every hidden gem on this floor can be tricky due to the complex layout of pipes and water hazards.
Unlocking Gems in the Main Observation Deck and Reservoir
The clear gem on floor B2 is hidden right near the observation area, requiring Luigi to inspect the environment closely. Using Gooigi, players can slip through pipes to reach elevated ledges that are otherwise out of reach. Blowing air on nearby valve controls releases the gem, making it accessible for collection.
For the red gem, you must direct your attention toward the main storage room within the reservoir. A hidden hatch can be revealed using the Dark-Light Device near the left wall. Once the hatch materializes, send Gooigi inside to retrieve the sparkling jewel waiting at the end of the narrow corridor.
Pipes and Secrets in the Sewer Canal
Finding the blue gem involves exploring the watery passages of the Sewer Canal area. Luigi must clear away loose debris with the Suction Shot to reveal an obscured pipe network. Gamers tracking daily gaming news often highlight how satisfying these hidden spatial puzzles can be for completionists.
The green gem requires teamwork between Luigi and Gooigi in the pipe control chamber. Send Gooigi through the drainage gate on the upper platform while Luigi handles the valve switches to divert water flow. Once the path is safe, Gooigi can snag the gem sitting inside a metal bucket.
Final Collectibles in the Engine Room
The yellow gem rests inside the central Engine Room, tucked away behind a decorative wall panel. Shine the Dark-Light Device on the missing piece of pipe near the entrance to rebuild the mechanism. Activating the restored valve triggers the engine to pop out the yellow gem directly onto the walkway.
Finally, the purple gem can be found near the elevated bridge mechanism in the lower section of B2. Luigi needs to use the Poltergust to vacuum floating paint buckets and splatter them against the back wall. Revealing the faint outline of a hidden ghost image will trigger a brief battle, rewarding you with the final gem upon defeat.
