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