Luigi’s Mansion 2 HD: All Treacherous Mansion Gem Locations

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Alas, my fellow ghostbusters, we have reached the last stop on ourjourneyinLuigi’s Mansion 2 HD. This new frontier that we reach is the Treacherous Mansion, which, judging by the name itself, holds challenges that will test our skills and patience (at times). Among the chaos, there are stillgemsto collect in this mansion, so utilize this guide wisely. Here’s where to find all the Diamond gems in Treacherous Mansion:

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Diamond Gem 1 - Underground Lab

As you enter theUnderground Lab, there will be a cutscene of two Greenies electrocuting a suit of armor. Once you’ve taken care of the ghosts in the room, you’ll need to recreate their experiment byblowing on the wheel to electrocute the suit of armoragain. A Boo (Boolldog) will pop out and bark at you. After capturing the Boo,grab the helmet with the Poltergust 5000 and aim it at the jar on the right-hand side, which will have the Circle Diamond inside.

Diamond Gem 2 - Haunted Catacombs

Once you exit theUnderground Lab, you’ll find yourself in theHaunted Catacombs. While you are there to chase down Polterpup, there are gems in this area that you’ll want to find beforehand.Look for the suit of armor with the sword and interact with it. Find out where thesword is pointing and follow that directionto the next corridor. The last area doesn’t have one present, which is because it is hidden!After using the Dark-Light Device and going through to the next corridor, you’ll find a painting on the wall of a ball of web.Get that ball of web, light it on fire, then make your way back to the wall of web near the back. That is where you’ll grab theTriangle Diamond.

Diamond Gem 3 - Cliffside

If you are reading this after getting theTriangle Diamond, stay where you are! If not,follow the direction of the swords from the suits of armor until you find the corridor with the webs on the back wall. Make your way to thefront of the room and take a right, which will lead you to a door to Cliffside. As soon as you make it there, you’ll spot theRectangle Diamondhanging on a vine, which can be removed by using your Poltergust 5000.

Diamond Gem 4 - Front Entrance

As soon as you make it toE-2 Double Trouble, you’ll be able to go inside this enormous Mansion. The first stop is at theFront Entrance, where you will find the next gem.Go to the Gargoyle statue on the rightand use theDark-Light Device to reveal a hidden chain. Pull on it and the staircase in the middle will move away, presenting you with avaultthat can be accessed by flashing yourStroboscopeat it. Before you can get your hands on theFootball Diamond, you’ll have to face a few enemies that stand in your way of scoring a touchdown.

Diamond Gem 5 - Restrooms

Go to theGrand Eastand walk to the end of the left side of the hallway. Use yourDark-Light Deviceat theback of the wallto reveal a door leading to theRestrooms. Once inside, go to thetoiletand pull on the chain, which will bring theDrop Diamondout of its hiding spot. Please wash your hands after picking the gem up.

Diamond Gem 6 - Gargoyle Roof

Enter the Ice Age Exhibit and go to the Mammoth in the middle of the room. Pull on its trunk, and you’ll be shot up to the Gargoyle Roof. Once there, you’ll notice stars in the sky creating a bigger star. With the constellation being incomplete, you’ll have to use the stars around the room and shoot them into the empty spaces. Those spots can be found in the gargoyle’s mouth, on the ground and floating in the sky. After completing the constellation, you will be rewarded with the Stone Diamond.

Diamond Gem 7 - Ancient Exhibit

To start, find the bucket in theDark-Age Exhibit, which will be given to you after defeating a Greenie who wore the bucket as armor. Make your way to theJungle Exhibitandfill it with water from the waterfallon the lower level. Make your way to theAncient Exhibitfrom there and go to theupper floor to the left-hand side. There will be aseedlingwaiting to be watered there. Once watered, the seedling will turn into a flower, which, if flashed, will give you theRhombus Diamond.

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Diamond Gem 8 - Aviation Exhibit

Soar over to theAviation Exhibitto find the next gem.Pull on the heavy bags tied to the hot air balloon, which will first bring forth a few enemies to get rid of. Once that has been done, the other heavy bag will reveal theStar Diamond.

Diamond Gem 9 - Nautical Exhibit

There are two ways you can go about getting this gem. The first is going through the portal and grabbing thebucketfrom wherever you left it, or you can grab alogfrom theJungle Exhibit. Once you’ve gotten your object,place it on the left of the ship, opposite the steering wheel, and lower the helm. This will reveal ahidden roomwhere you will find achestcontaining theOctagon Diamondinside. You are now another step closer to becoming a pirate!

Diamond Gem 10 - Dark Age Exhibit

Go to theStudyroom and grab one of theballoon bulbsfrom there. When you get back to theFront Entrance, where you will use it tofloat up to the right-side of the room. Find thegargoyle with a blue bookin its mouth, which you may grab by using theStroboscopeto flash it. Once you’ve gotten the book, bring it to theDark Age Exhibit, andplace it inside the bookshelf in the middle of the room. This will reveal theOval Diamondfor you to put into your collection.

Diamond Gem 11 - Jungle Exhibit

You can only get this gem inE-3 A Train to Catch. As similar to the previous gem, make your way to theStudyto get aballoon bulb. Once you’ve acquired that, go through the portal and move to theJungle Exhibit.Use the balloon to float to the upper left side of the room, where there will be a platform for you to land on. Find thegolden bulband grab it.This will start a time-based minigame in which you’ll have to collect all the coins in the time span given. Once you’ve done that, theSpindle Diamondwill be rewarded to you on theupper right-hand side of the room, inside a chest.

Diamond Gem 12 - Ice Age Exhibit

You can only get this gem in E-3 A Train to Catch. This gem also required you to make a stop in the Study room to grab a balloon bulb. Make your way to the Ice Age Exhibit and float to the upper left side of the room, where there will be a platform. Similarly to the previous gem, there will be a golden balloon bulb, which will start a time-based coin-collecting minigame. Once you’ve gotten all the coins, head back to the upper left platform to open the chest that has the Coffin Diamond inside.

Diamond Gem 13 - Train Exhibit

Once inside theTrain Exhibitand have gotten rid of all the ghosts,go to the middle of the track and flash your Dark-Light Device. After collecting the Spirit Balls, alarge trainwill be brought into the room. While the train moves on its own, you are still the conductor of collecting gems, considering once the ride stops, you’ve acquired theMushroom Diamond. With all the gems in your grasp, it should be a kaBOOST of confidence!