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