Shining a light on the ghosts is no longer enough to stun them into immobility. Players need to activate a strobe function and release it to stun the ghosts before sucking them up with the Poltergust.. Different types of ghosts haunt the different mansions. Luigi must figure out how to defeat each one of them and find hidden secrets to unlock new areas and treasure chests. These new elements add more variety and introduce new puzzle-solving mechanics.. Players can use the Poltergust to help Luigi remove wallpaper to reveal hidden areas clean up piles of treasure-hiding leaves or suck up stacks of coins and bills. But in reality the nervous and reluctant Luigi just wants to get as far away from these g