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