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