On Floor 5F you will fight the Maid Boss Chambrea. Thrash him on the ground and return these steps three times to beat the Ghost. Be ready with your Poltergust, stun the ghost first then walk behind and pull him. Steward Ghost in Luigi’s Mansion 3 will be the first tough enemy you will face, with over 250 health points he will throw heavy luggage on you. Elvin Gadd will be free and he will ask you to take him back to the underground garage. Here is a dedicated guide on how to upgrade your Poltergust G-00 in Luigi’s Mansion 3, after getting the attachment return back to the hall and use the vacuum on the picture. He is trapped in the picture, and to pull him out you will need to upgrade you Poltergust G-00. This will lead you to a hall where you will find a picture of Professor Elvin Gadd who is going to give you a ton of fresh upgrades for your only weapon Poltergust G-00. Carry the key and unlock the big door used by the hotel owner to greet you at the very beginning.

Also, hold A in front of a glowing green lock on the right that will give you a crystal.

After capturing the ghost go to the front desk and grab the key.

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