Here is the full list of all 36 Juicy Realm achievements.
Kill 100 Melons
Clear stage without spending and Gold
Kill the Blueberry Boss
Pick up 10,000 Coins
Kill 100 Apples
Die 10 times
Kill 100 Pears
Clear normal difficulty
Use Amy to clear dungeon
Kill the Cake Boss
Kill the Cactus Boss
Kill the Melon Boss
Die 1 time
Use Alpha to clear dungeon
Use PonPon to clear dungeon
Use Tokoroa to clear dungeon
Clear dungeon with 2 players
Open 50 treasure chests
Save your teammate 10 times
Use Boborot to clear dungeon