Dream Journey/guide

Skateboard
Enter the shell door. Go left a bit and then south past three sand towers. Interact with the skateboard.

Snake
Enter the dark brown door. Go left and take the narrow path going down. Interact with the snake.

Girl
(Snake effect is needed).

Enter the shell door. Go roughly south-east to a large sandcastle. Use the Snake effect to go inside. Keep going down until you reach two sets of stairs that form an X shape. Go down the bottom-left stairs and you should be on a platform. Interact with the red NPC.

Boy
Enter the pink door. Go north and enter the blue archway. Go right and take the first path going up. Go right again and interact with the blue NPC.