Susan: To open a passage, I had to attack all the statues I could see. After that, a circle appeared, and I blew the horn. Having done that, I could enter the castle. To disperse attacking shadows, I fired my arrows at the stained glass windows, and the light made them disappear. I gained access to all statues.
When we ran upstairs, we found another shadow enveloping a statue. I got rid of it the same way as last time. Then, together with Lucy we shattered the icy rock and moved on. In the next chamber I needed Lucy's help again. She slipped through both sides and weakened the walls. All I had to do, was to shoot the icicle above. After activating all statues I played the horn again.
We had only entered the next chamber, when we were attacked. Luckily, Lucy had her taming skill. She tamed one of the enemies and defeated the rest. Together, we broke the icy rock, and when the passage behind us collapsed, we had to fight till another passage appeared. I set fire to my arrows and shot the shadowed statues. When I hit all of them, I began to pound on the door. An ogre tried to interfere, but just after the door broke, I quickly pushed the torch aside and played suitable melody.