Here is the full list of all 27 Treasure Adventure World achievements.
Find All 12 Hats
Find All 6 Scrolls
Donate 20 coins to the homeless
Sink Roelof and Lugus' Ship
Find All 12 Legendary Treasures
Find All 19 NavPearls
Defeat Kosthad
Defeat GC Mainframe 1000X
Defeat GC Capsule ß0.3
Defeat GC Drillo XP10
Defeat Beevil
Defeat GC Crabot XL
Open 50 Coin Chests
Break Up The Fizzy Pixels band
Defeat Morsky
Collect 1000 Coins
Defeat Golemy
Defeat Fatberg
Find All 12 Specimens
Find Furnished House
Find All 12 Numis
Find All 8 Golden Food
Find All Gear
Kill Baddie with Food
Get 100% Completion
Defeat Youlang - Best Ending
Discover an Easter Egg