Luigi's Mansion 2 HD

Gradual Infiltration Walkthrough and How to Unlock

A walkthrough for Gradual Infiltration in Luigi's Mansion 2 HD (Dark Moon) for the Nintendo Switch. Read on for a detailed guide for Gradual Infiltration, including how to get 3 stars, and how to unlock the Gradual Infiltration bonus mission!

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- Gloomy Manor Haunted Towers
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How to Unlock Gradual Infiltration

The Bonus Mission, Gradual Infiltration, is unlocked by capturing all the Boos in the Gloomy Manor. Additionally you would have to complete the Boss stage for the respective mansion to unlock the bonus mission.

✔️ Mission Boo Name HP How to Find
A-1 Poltergust 5000 Boogie Woogie 20 Room: Garage
Enter the garage, suck up all the dust, and use the Dark-Light Device in the northeast corner near the drawers, where the wooden stool originally was. Suck up all the spirit balls to reveal the Boo.
A-2 Gear Up BaBoon 20 Room: Mudroom
Enter the mudroom and use the Dark-Light Device in the south wall where a small table originally was. Suck up all the spirit balls to reveal the Boo.
A-3 Quiet Please! Boo Boo 20 Room: Studio
Enter the studio, remove the sheet that is covering the painting canvas, and use the Dark-Light Device where the painting canvas originally was. Suck up all the spirit balls to reveal the Boo.
A-4 Visual Tricks Unnamed Boo 15 Room: Dining Room
Enter the dining room and use the Dark-Light Device in the middle of the room where the dining table originally was. Suck up all the spirit balls to reveal the Boo.
A-5 Sticky Situation Boothoven 20 Room: Library
Enter the library and use the Dark-Light Device in the northeast corner where the piano originally was. Suck up the spirit balls to reveal the Boo.

Gradual Infiltration Walkthrough

Gradual Infiltration Objectives

Goal A group of ghosts have returned to the Gloomy Manor! Catch all of the ghosts as quickly as possible.
Description We have an...interesting situation. The Parascope is picking up mild paranormal signals in the manor. I'm sending you in to investigate.

Gradual Infiltration How to Get 3 Stars

Min. Clear Time Min. Ghosts Captured Max. Health Lost Min. Treasure
4:35 19 20 or Less 990

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!

Capture All the Ghosts as Soon as Possible!

The ghost that appear during this bonus mission may appear at different locations across multiple attempts. Check your map to see which areas are infested with ghosts.

Rush towards the first room in your list. Use your Strobulb to stun ghosts, and reel them in with a fully charged Poltergust A-Pull. Next two rooms will given after clearing the first room.

Strategically choose the room closer to your current room to save time. After clearing both rooms, you will receive the third list of infested rooms. This time it will be 3 infested rooms. After clearing the last set of rooms, the bonus mission will end.

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Gradual Infiltration Possible Enemies

Enemies Encountered in Gradual Infiltration

Greenie ImageGreenie Slammer ImageSlammer Hider ImageHider
Poltergeist ImagePoltergeist

Luigi's Mansion 2: Dark Moon Related Guides

Luigi

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

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