Here is the full list of all 15 Disney Dreamlight Valley achievements.
Remove 3,000 Night Thorns
Start 1,000 daily discussions
Complete 1,100 Dreamlight Duties
Catch 1,800 fish
Mine 1,800 times
Build 12 Houses for friends
Cook 900 meals
Fully upgrade the player's House
Have 15 Best Friends
Give 540 Gifts
Collect 1,800,000 Star Coins
Harvest 4,500 Vegetables
Take 50 pictures
Unlock all Biomes
Unlock all of Goofy's Stalls