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