Richard asks you to get five gold leaf from Kanalet Castle in Link's Awakening on the switch. If you haven't reached the castle yet, be sure to follow this guide for how to get into it. Once you get there, it's time to start looking for that gold leaf.
Where to find the five gold leaves
Gold leaf 1
From the stairs you used to enter, go right, then south. You'll find a collection of holes in the ground, with a bomber popping up and throwing bombs at you. Kill this enemy to get the first gold leaf.
Gold leaf 2
Go back to the stairs you used to climb and continue west. You will come to a bird in a tree. Pick up a rock and throw it, so the bird will attack you. Kill the bird to get the second gold leaf.
Gold leaf 3
Head south and enter through the castle gate. Head west, then kill the three enemies you find there. Killing them causes a gold leaf to fall from the ceiling.
Gold leaf 4
Head north down the hallway, then make sure to place the button at the end of the hallway as you head east. This button opens the doors to the outside. Go up the stairs, in a room where there is a lightning enemy. Follow the path around the room to the outside. Go to the middle door, take a pot and throw it at the entrance to break it.
Go inside and kill the giant knight. He takes a lot of damage, but it's easy to block his attack if you face him with your shield up. Wait for him to throw the balls, then hit him. Do this until his death and he will drop a gold leaf.
Gold leaf 5
Exit the room and smash all the pots outside and pick up the falling bomb. Now go back to the balcony and through the door on the left. Go back to the room where the lightning enemy is and head to the two broken pieces of wall. But a bomb in front of the one on the left. When it explodes, an enemy will come out. Kill them to get the last gold leaf.
Now that you have the five gold leaves, you can return to Richard's place. Make sure to bring a shovel with you. You can buy it at the store in Mabe village for 200 rupees.
