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