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