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