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D-Bonus Severe Infestation
D-Bonus: Severe Infestation is a bonus mission for the Secret Mine. In this Luigi's Mansion 2 HD walkthrough, we will walk you through the bonus level so you can clear out the Secret Mine and move on to the last area, the Treacherous Mansion.
Sever Infestation Gauntlet
The bonus missions are randomized in terms of the locations the ghosts will appear in, but they will always follow the same general structure. You will enter the Secret Mine to find a couple of rooms highlighted on your map. Head to each room, clearing out the ghosts that are lurking inside.
From there, check your map to see the next rooms you need to head to. Keep moving through the rooms and clearing out any ghosts inside them until the gauntlet is finally over. You are timed when completing this task. The faster you complete the mission, the better score you will get at the end.
Expect to go up against large amounts of Greenies, Empowered Greenies, Empowered Slammers, and Empowered Sneakers. Expect to face Greenie variants such as Weapon and Shield Greenies, Helmet Greenies, and Rock Greenies.
Be wary of icy rooms like the Ice Lake and Fishing Hut, and make use of the dodge button to avoid ghosts that weren't stunned by your flash. In order to get a good time on this mission, try to remember the layout of the mansion and the shortcuts between rooms, like the Airway and the elevator to the Chalet.