Luigi's Mansion: Dark Moon Cheats - 3DS
Unlock Bonus Missions
Gradual Infiltration - Capture all 5 Boos in "Gloomy Manor".
Hostile Intrusion - Capture all 5 Boos in "Haunted Towers".
Outlandish Interruption - Capture all 5 Boos in "Old Clockworks".
Severe Infestation - Capture all 3 Boos in "Secret Mine".
Terrifying Invasion - Capture all 5 Boos in "Treacherous Mansion".
Unlock E. Gadd Medals
#1 - Complete the Dark Moon Quest mode.
#2 - Obtain a 3 star rank on every mission in the Dark Moon Quest mode.
#3 - Collect every type of ghost in game. (Both Evershade Valley and Scarescraper Ghosts).
Unlock Scarescraper Mode
Beat the mission "Visual Tricks" in Gloomy Manor.
Unlock Surprise Mode
Beat the single-player campaign, then select the Scarescraper option from E. Gadd's bunker to unlock this mode.