Remove the opal with the DRAGONâ€™S CLAW (W) to acquire the OPAL.
Insert the OPAL into the slot (X); take the RUSTY KNIFE (Y).
Go to the Chapelâ€™s front.
Connect the GRINDSTONE to the device (Z); sharpen the RUSTY KNIFE on the grindstone to acquire the KNIFE.
Cut the tent with the KNIFE (A); take the FISH (B).
Go to the Chapelâ€™s Front.
Give the FISH to the dog (C).
Go to the Underground Lake.
Take the PICK HAMMER (D).
Break the stalagmites with the PICK HAMMER (E).
Zoom into the door behind the stalagmites.
Play the mini-game.