After the challenges, you meet Quirrel in a room
(he is actually the enemy). To defeat him, get 
him to destroy the 4 large pillars in the room. 
The best way is to stand behind them, wait until
he shoots, then move behind the next one. When 
they are all gone, you both will fall into a room
with lots of rocks on the floor and the mirror in
the middle. He will walk to the top of the room 
and shoot at you. Use the mirror as a shield (it 
bounces his shots back at him). After awhile he 
will levitate rocks at you. Again, use the mirror
as a shield. When he moves to the bottom of the 
room, keep the mirror between you. Shoot the 
mirror once with Flipendo and it will swing round
and you can use it as a shield again. It will not
be long before he is defeated.


by unknown