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B-5 Doggone Key
B-5: Doggone Key is the fifth mission for the Haunted Towers. In a turn of events that will become increasingly common, the Polterpup has stolen the key, and it's up to Luigi to go on a chase to recover it. In this Luigi's Mansion 2 HD walkthrough, we will guide you through each step of the level, including all Boo and Gem locations.
Haunted Towers Entrance
The Polterpup will be waiting for you as you warp into the mansion. Head into the Courtyard to watch the pup as he devours the key and bolts off into the East Tower. Use the Dark-Light to follow his tracks through the Hydro Generator and up to the Toolshed.
Money Spot: Check the same tree on the right for some gold frogs this time. Flash them with your Poltergust to collect the cash.
Toolshed
It may seem like the Polterpup has vanished from the room, but he's just hiding. Flush him out by pressing X to interact with the various items in the area and watch him bolt out into the garden.
Garden
Hidden Boo: French Boodle - Upon re-entering the Toolshed, all of the furniture will be gone. Reveal it all with the Dark-Light to bring the Boo out of hiding.
As you enter the Garden, the Polterpup will set off the lawn mower then jump right back into the Toolshed stairs. Three Sneakers will appear to try and stop you from going after him. Nab all three ghosts at once to make the fight easier and set off after the Polterpup.
Toolshed Stairs
The Polterpup will waste no time in moving to the very top of the stairs, so set off after him to get your key back. Take the plant stairs in the Botany Lab to the Seedling Laboratory, head up the rest of the Toolshed Stairs, and finally make your way up to the Conservatory.
<meta /> <meta />Money Spot: On the second to last landing of the Toolshed stairs is a drawer that contains a Goldie.
Conservatory
Beware of the Creeper in the back left of the room, as it can easily trap you if you don't notice it's telltale puddle. The organ from this room has gone missing, so reveal it with the Dark-Light and play it to bring the Polterpup out of hiding.
Quickly defeat the ghosts in the Conservatory so you can follow the pup outside to the Crow's Nest and into the West Bathroom.
West Bathroom
At this point, the Polterpup will alternate between running back and forth between the Bedroom and the Bathroom. Use a quick flash to stun the Polterpup and wrangle him in. If he heads into the Bedroom, watch for Creepers on the floors and ceilings.
Finally catch the Polterpup to finish the mission and move on to the next one, B-Boss Tree Topping. But don't worry, this won't be the last of the Polterpup! It's now added to E. Gadd's Vault under the name ???.
<meta /> <meta />Money Spot: Reveal the missing toilet in the Bathroom for some cash.