Below are the names and locations of the nine items you must collect in the game in order to proceed.
Binoculars - Grab this item at the end of the Industrial Castle level, after slaying the boss.
Boomerang - Equip the Cardinal Animal Orb, and go to the Thief Forest. When you locate the owl pooping from a tree, the cardinal will find this item (so long as he’s with you).
Bow and Arrow - In the Thief Forest level, they are dropped randomly and regularly.
Compass - Find to the left of the blacksmith.
Horn - After killing the Corn boss, one of the Peasants will give it to you.
Key Weapon - Equip the Cardinal Animal Orb, and go the Full Moon level. When you reach the mountain path, go up until you reach the second hut. Go near the hut and Cardinal will locate the item for you.
Spade - Head to the first desert level after you’ve complete the ship level. Leave the ship and find this item right in front of you on the left side of the sand castle.
Steering Wheel - At the end of the lava-colored level after defeating the dragons.
Treasure Map - You’ll receive this after defeating an opposing team during a mission at the sand castle in a game of volleyball.