Hidden Areas

During the Skurge Challenge in one of the first rooms, the one with the block blocked 
by two bits of ectoplasm, once you've removed the estoplasme and casted flipendo on 
the block dont go for the star yet, jump down and on the right side you'll find a secret 
room marked with a lightening, containing a chest.
Submitted by unknown

When you are in the "Hospital Room" use a Flipendo on the paintings on the wall. When you 
hit them all(4) a secret stair will be openend!
Submitted by eabach at wanadoo.nl