That's easy. All you have to do is walk (or run) into the mirror wall to control whether or not u want to be in the real castle room or the reflection of the room. To get to the reflection where Lakitu is, you have to have the power flower that makes you invisible and walk or run into the mirror. You'll find a couple of power flowers in the room. It doesn't require the power flower to get back to the original room. This only works when Luigi has his hat on. If not, there will be no power flowers in the room.
You have to enter the room as Luigi. The flowers don't appear for Mario or Yoshi.
you need to go into a room with Mario with two pedistals with flowers on them. jump into the flower and you will be invisable. go through the mirror and on the right side jump into the luigi painting. go throught the level and then you look into a certain mirror in the level very closely you will turn into luigi on the mirror side then youwill battle king boo. after you ground pound on him three times you will get the luigi key. Hope i helped!!!
If you mean on Super Mario 64 DS, then Luigi is in a painting in a haunted mansion & Wario is in a painting on the other side of the mirror in the mirror room. First get Luigi so you can get Wario.
Look in the mirror. Your reflection should change to Luigi. Defeat King Boo and Luigi is yours.
you have to unlock luigi,then go the mirror room .then get the flower and pass tru the mirror and get in the door.
If you mean the mirror room where you unlock Luigi (in Big Boo's Haunt) when you fall to the room, just go forward and touch the mirror with Mario, then wait. You'll have to battle King Boo to unlock him.
You go into the mirror room as luigi then get the flower so you are invisible.Walk into the mirror then the picture of luigi on the other side would be wario inside.Jump into that and beat the boss. .
you have to unlock luigi then find the mirror room then your in!
It is talking about wario's painting. Be Luigi to get it.
Go through the mirrors in the mirror room!
You have to unlock Luigi and then use his invisibility power to go through the mirror, if thats what you are asking.
You go into the mirror room as luigi then get the flower so you are invisible.Walk into the mirror then the picture of luigi on the other side would be wario inside.Jump into that and beat the boss.