You have to go through thorns, chop off the terrifying ivy with your sword, cut off the dragon's head with one knife, take out the golden key from its belly full of gastric juice, then defeat the goblins, go to the dark basement, open the door, and find the way to the castle.
Finally, you stand under the tall castle and shout her name three times, asking her to let down her long hair.
Climb up along the thick black hair.
Don't forget to pay attention to the smiling witch behind you. She will prick you full of holes with vines.