This is a walkthrough for all gems in B5 Doggone, as well as how to clear the level and find the boo in Luigi's Mansion 2 HD for the Nintendo Switch. Read on for a detailed guide for B-5 Doggone, including how to get 3 stars, gem locations, location of the boo, as well as the secret door location.

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Gloomy Manor							Haunted Towers							Old Clockworks
B-1			B-2			B-3			B-4			B-5			B-Boss			B-Bonus

B-5 Doggone Key Gems and Boo Location Map

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Map	Guide	Gems
Boo	Secret Door	Enemies

These are all of the Gems available within this Mansion, however some Gems are exclusive to specific Missions.

Interactive Map of All Mansions

B-5 Doggone Key Walkthrough

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Map	Guide	Gems
Boo	Secret Door	Enemies

B-5 Doggone Key How to Get 3-Stars

Min. Clear Time	Min. Ghosts Captured	Max. Health Lost	Min. Treasure
13:15	15	63	695

These numbers are values we got based on our runs. If you got 3-Stars with better scores, take pride in it and share a picture in our Missions Record Boards!

B-5 Doggone Key Objectives

Goal	Use the Dark-Light Device to find the trail of paw prints that the ghostly dog left behind. Once you find the dog, recover the special key.
Description	A very frisky spectral pooch took the special key that we need! Track the dog down and get that key!

1. Find the Ghostly Dog
2. Recover the Special Key

Find the Ghostly Dog

Entrance

After getting to the entrance, you can hit the tree to the right for a Gold Frog. You can also use your Dark-light to reveal a missing flower for some Bills and Coins. Head inside the gate to proceed.
You land in the Entrance and you can see the Polterpup just beyond the gate. The tree on the left has a gold frog.

Courtyard

A cutscene will play where the Polterpup eats the key and scurries off into the Hydro Generator room, follow suit.

You can also step on the right pressure plate to reveal nothing, so use your Darklight and a cardboard flytrap should appear. Grab a spike fruit from the left and you can shoot it down for a ton of coins.

Hydro Generator, East Hall, and Tool Shed

Use your Dark-Light to find paw prints left the the Poulterpup. Follow them to find where the Polterpup went through the wall, leading north.

Pass through the East Hall, head east into the Tool Shed. Interact with one of the Desks and the Polterpup will be there, but it will run off to the Garden.

Recover the Special Key

Garden

The Polterpup will turn on the lawnmower and leaves you to deal with the mess. You can go ahead to watering and strobing the flowers for some Cash and the Rectangle Emerald if you haven't gotten it yet. But going back to the Toolshed, three Sneakers will appear, so defeat them first.

Tool Shed

Coming back from the Garden, you'll notice almost all of the furniture is gone. Use your Dark-light to get them all back, and make French Boodle appear. Interact with the fountain to go to the Toolshed Stairs and proceed after nabbing the Boo.

Toolshed Stairs

The Polterpup will move upstairs, but there's a Creeper at the bottom of the stairs. The Polterpup will disappear on the third floor.

Botany Lab and Seedling Laboratory

Head inside the Botany Lab and use the plant to get to Seedling Laboratory. The Polterpup will run off to the fourth floor. Check the nightstand in front of the door of the Seedling Laboratory for a Gold Greenie. Head upstairs to the Conservatory.

Conservatory

When you enter the room, there will be a Creeper at the northwest corner of the room behind a toppled sofa, so take care of that first before using your Black-light to restore the organ.

Play the organ to make the Polterpup appear, and it will run behind the organ. Go and follow it, but the Polterpup will escape to the room to your left. If you try to leave, the doors will be blocked and a Gobber and three Greenies will appear. Go to the West Bathroom once you're done.

Crow's Nest, West Hall, and West Bathroom

From the Conservatory, head west into the Crow's Nest and keep going until you get to the West Hall. Enter the West Bathroom at the north and the Polterpup will hide immediately when you arrive.

Use your Dark-light to reveal the toilet for money. The Polterpup is hiding in the bidet and will run into the West Bedroom. Take care of the small Creepers in the West Hall and head inside the West Bedroom.

West Bedroom

Once here, look up the ceiling and there's a Creeper there so take care of that first. The Polterpup is in one of the beds, so use your Dark-light to reveal the paw prints. Once you find it, suck up the sheets and you can finally vacuum the Polterpup. It has 50 HP. The key will appear when you defeat it. The stage ends once you catch it.

B-5 Doggone Key Gem Locations

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Map	Guide	Gems
Boo	Secret Door	Enemies

Available Gems
#1					#2					#3					#4
#5					#6					#7					#8
#9				#10				#11				#12				#13

Grayed out Gems are unavailable on this mission.

Gem #1 (Circle Emerald)

Gem	Circle Emerald
Where to Find	Tower Lobby

Head towards the area behind the first flight of stairs in the Tower Lobby. From there, acquire the gem you find in the area.

Gem #3 (Rectangle Emerald)

Gem	Rectangle Emerald
Where to Find	Garden

Use the Poltergust to water the flower located on the southeast portion of the area. After the flower blooms, flash it with the Strobulb to reveal the hidden gem.

Gem #4 (Football Emerald)

Gem	Football Emerald
Where to Find	Botany Lab

Use the Poltergust to water the flower located on the northeast portion of the area. After watering the flower on the left and waiting for it to bloom, flash it with the Strobulb to reveal the hidden gem.

Gem #5 (Drop Emerald)

Gem	Drop Emerald
Where to Find	Seedling Laboratory

Proceed towards the shooter mechanism in the area, and shoot the mouse dashing around the room. Hitting it will grant you the hidden gem.

Gem #6 (Stone Emerald)

Gem	Stone Emerald
Where to Find	West Garden

Once you've gained access to the Maintenance area, fix the pipes by the stairs, then shoot a seed pod towards the giant flytrap in the area. From there, proceed towards the chest to acquire the hidden gem.

Gem #8 (Star Emerald)

Gem	Star Emerald
Where to Find	Old Graveyard

Upon entering the old graveyard, use the Poltergust to suck the Star Emerald that is hanging on a vine.

Gem #11 (Spindle Emerald)

Gem	Spindle Emerald
Where to Find	Solarium

Head towards the Solarium, use the Dark-Light Device on the table in the north where a chest originally was, and open the chest to obtain the Spinde Emerald.

Gem #13 (Mushroom Emerald)

Gem	Mushroom Emerald
Where to Find	West Bathroom

Enter the west bathroom after getting a key for it, defeat all the enemies inside, pull the toilet paper on the west wall, and a Mushroom Emerald will drop.

Gem Locations: How to Find All Gems

B-5 Doggone Key Boo Location

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Map	Guide	Gems
Boo	Secret Door	Enemies

French Boodle Location

Boo	Where to Find
French Boodle	Tool Shed

Enter the tool shed and use the Dark-Light Device on the drawer on the north side, and a ghost pup will appear. Chase the pup in the garden, reenter the tool shed, use the Dark-Light Device all around the room to reveal all the furniture, and suck up all the spirit balls to reveal the Boo.

All Boo Locations: Where to Find All Boos

B-5 Doggone Key Secret Door

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Map	Guide	Gems
Boo	Secret Door	Enemies

This mission does not have a secret door.

All Secret Door Locations and Rewards

B-5 Doggone Key Enemies

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Map	Guide	Gems
Boo	Secret Door	Enemies

Enemies Encountered in B-5 Doggone Key

Greenie	Sneaker	Creeper
Gobber	Gold Greenie	???
Polterpup	Spider	Bat
Gold Frog

Luigi's Mansion 2: Dark Moon Related Guides

All Mansions and Stages

All Mission Guides

Gloomy Manor
A-1		A-2		A-3
A-4		A-5		Boss
Bonus Mission
Haunted Towers
B-1		B-2		B-3
B-4		B-5		Boss
Bonus Mission
Old Clockworks
C-1		C-2		C-3
C-4		C-5		Boss
Bonus Mission
Secret Mine
D-1		D-2		D-3
Boss			Bonus
Treacherous Mansion
E-1		E-2		E-3
E-4		E-5		Boss
Bonus Mission
King Boo's Illusion
A Nightmare to Remember

Post-Game

Post-Game Guide
ScareScraper Guide	Ending and Post-Game Content	100% Checklist

ScareScraper Records Board