There are many Boos to find throughout Luigi’s Mansion 2 HD and it can be a challenge to find them all. In this guide, we’ll show you how to find all of the Boos located in Treacherous Mansion and help you complete your Boo collection.
Mission E-1
Chase Polterpup to the Underground Lab. Clear out the ghosts in the room, then head to the valve on the back wall. Use your vacuum to spin the valve. This should cause the machine to generate electricity.
Once the electricity hits the suit of armor, Boolldog should pop out. The Boo has 40 HP, so use your vacuum to drain its health and capture it.
Mission E-2
Proceed with the mission as normal. Once you have both Toads, head to the Inner Courtyard and shoot them into the cages.
This will cause the statue to disappear and Boopa Troopa will reveal itself. Then the mandatory fight will begin.
The Boo has 35 HP. Defeat Booba Troopa and the other ghosts in the room to make the statue visible again, then complete the mission.
Mission E-3
Head to the Nautical Exhibit and clear out the ghosts. Use the wheel in the bottom left corner to flip the portal to the Study. Grab one of the pink balloon plants in the Study and enter the portal.
Take the balloon to the Dark Age Exhibit and use it to fly up to the ceiling.
You’ll see a golden balloon plant on the right side of the room. Grab the golden balloon and collect all of the coins, which are arranged in the shape of a Boo.
Once all the coins are collected, a chest will spawn on the first floor of the exhibit. Open it to reveal the next Boo, Booreaucrat.
The Boo will have 40 HP. Deplete its HP to add the Boo to your collection.
Related: Luigi’s Mansion 2 HD: How To Find Every Boo In Secret Mine
Mission E-4
This mission is a little different from the others. The bulk of this mission will be spent fighting the big Boo, which in reality is 10 smaller Boos.
When the big Boo is vulnerable, grab its tongue and use the front of the train to split the Boo apart. Once split apart, you’ll be able to use your vacuum to shoot the Boos into the cages on the train. Once all of the Boos have been captured, the mission will be complete, and you’ll add 10 more Boos to your collection.
Mission E-5
Before heading to the Terrace, go to the Aviation Exhibit and use your Darklight in the middle of the room to reveal a hidden hot air balloon.
Revealing the hot air balloon will cause the final Boo, MaraBoo, to appear.
The final Boo in Treacherous Mansion has 40 HP. Capturing this Boo will complete your Boo collection in Luigi’s Mansion 2 HD.
Reward
Your reward for capturing all of the Boos in Treacherous Mansion is the secret mission, Terrifying Invasion, which you can play right away!