Navigating the murky subterranean levels of the Last Resort hotel in Luigi's Mansion 3 presents some of the game's most clever environmental puzzles. Floor B2, known as the Boilerworks, hides six distinct gems within its sprawling pipe networks, flooded chambers, and industrial control rooms. Securing all of these collectibles requires creative use of Gooigi, precise timing, and interactive gadget manipulation.
Finding the Red and Clear Gems in the Boilerworks
The Red Gem is located in the Observation Room on Basement 2. To obtain it, send Gooigi through the pipe on the left side of the room to reach the area behind the glass wall. Once there, have Gooigi pull the flush chain to release the glowing red gem from the ceiling mechanism.
Locating the Clear Gem requires a quick trip to the Main Observation Turret room. Use Luigi's Dark Light Device on the far left corner to reveal a hidden boiler handle that was previously invisible. Spin the handle using the Suction Shot to release the Clear Gem into your inventory.
Unlocking the Blue and Green Gems
The Blue Gem is concealed inside a hidden freezer vault located within the Sewer A section. Have Luigi blast open the vault door using a Suction Shot, then send Gooigi inside to melt the ice block surrounding the gem using a nearby flame torch. Players tracking walkthrough updates and daily gaming news often highlight this specific puzzle for its clever dual-character interaction.
For the Green Gem, head over to the Drainage Control room after the water level has been lowered. Send Gooigi down into the dry drain area to access a small sewer pipe leading to a elevated platform. The Green Gem sits safely atop this platform, waiting to be vacuumed up by Gooigi.
Collecting the Yellow and Purple Gems
The Yellow Gem requires exploring the Pipe Tunnel area where giant spinning cogs control access to elevated platforms. Navigate Gooigi across the catwalks while manipulating the valve handles with Luigi to clear hazardous water streams. Once you cross the central bridge safely, the gem can be vacuumed out of a wall nook.
Finding the Purple Gem takes you to the Sewer C corridor lined with heavy iron grates. Use Gooigi to slip through the wall grate near the back of the hallway into a secret alcove. Blow away the surrounding debris with the Poltergust G-00 to reveal the hidden Purple Gem resting on the floor.
Essential Tips for B2 Gem Completion
Patience is essential when exploring Floor B2 because several areas require lowering the floor's water level during main story progression before gems become accessible. Revisiting the Boilerworks after completing the main boss fight makes navigation significantly easier as most hazard valves remain permanently disabled.
Always check hidden pipes and use the Dark Light Device liberally whenever a corner looks suspicious or incomplete. Combining Luigi's physical interactions with Gooigi's phase-shifting abilities guarantees that every gem in the Boilerworks will be added to your collection.
