Like the other bonus missions, Luigi has to capture ghosts as quickly as possible. The order of the rooms and the variety and quantity of ghosts vary each time Luigi plays this mission. The mission is complete once Luigi clears six rooms.
We have an infestation on our hands! The Parascope is detecting strong paranormal signals all throughout the Secret Mine. It's go time, Luigi!
When clearing the Secret Mine of ghosts, what E. Gadd says to Luigi at the end of the mission differs depending how quickly Luigi completes it:
"All right, Luigi. You got 'em all. I could have done it a bit quicker myself, but at least you got the job done. Besides, I'm too old for this ghost-catching tomfoolery. Anyhoo, let's bring you back." (Time over 6 minutes)
"Whoa there, Luigi! You're one lean, green, ghost-catching machine! Nice work. Sit tight and I'll bring you back." (Time under 6 minutes)
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