Here is the full list of all 38 Castaway Paradise Complete Edition achievements.
Live the luxury life of a VIP
Donate 15 fish
Donate all bugs
Completed 100 quests
Donate 15 bugs
Donate a collectable
Rebuild Harold's Museum
Unlocked a gate
Make a profit of 2000 gems at the Bank
Harvest 50 crops
Remove 50 weeds
Collect 25 pieces of garbage
Make a profit of 500 gems on the Stock Market
Unlock the second room in your house
Used every piece of equipment
Completed 25 quests
Rebuild a bridge
Rebuild Gustave's Bakery
Remove 25 stones
Changed every piece of outfit
Get your first collectable
Completed the tutorial
Donate all fish
Donate 15 shells
Donate all shells
Donated every collectable
Read 50 chit chats
Rebuild Amelia's Planehouse
Rebuild Angus' Trailer
Rebuild Victoria's Mansion
Rebuild Francis' Pirateshack
Rebuild the Lighthouse
Make a profit of 5000 gems on the Stock Market
Grow every type of fruit
Grow every type of flower
Grow every type of crop
Remove 25 cobwebs
Wore an outfit of the opposite gender