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