okay first you need to get the luminous spell. Then defeat the hinkypunks by shining the light on them until they become visible. Then attack them with flipendo. Now charge the crystal ball with the light and then run to the mirror and move it. The light should hit the mirror and hit the giant eye. Then a door will open. Go down the steps and through the hall ( You will be attacked by toys) Then go through the door and then you will be attacked by a toy robot. When it throws fireworks at you reflect them bak at it with expelliarmus. I think that using flipendo on it to will work. Then it will explode and land on the train track. Then charge the crystal ball and a door will open ( the one next to the ghoul attacking neville) . Jump down and make the ghoul walk back into the little room by using the luminous spell.

what u do is u do lumos on the hinkypunks and then wen they are weak enough blast them with flipendodo this to all of the hinkypunks and then lumos the big diamond thing, turn the other moving diamond thing (not the ballon the stand) and when it refects on the eye the other door opens and u go out of tht door