Talk to Dr. Frenekstrain to start the quest. Then talk to the guy in the northern part of the castle. He will lead you to a place to dig up a body part. Then go to the castle and climbing the hair. Go into the room on the west side, and search everything. You will get a triangle. Do the same with the room on the east side. You will get another triangle. Put them together to get a star. Then walk out of the castle then walk east. Use the triangle with the most eastern grave. You will go into a dongeon with level 25 creatures. But they have 100 health! That is 400 experience per creature!