Here is the full list of all 31 Yoku's Island Express achievements. It takes around 10-12 hours to unlock all of the achievements on Windows.
Hatch the God Egg
Activate all Scarabs
Collect all Wickerlings
Get the biggest wallet
Unlock all treasure chests
Toot the noisemaker 1000 times
Try every ball style
Complete Thorn quest
Collect every ability upgrade
Complete Rinri's quest
Take the surviving egg to Dipperloaf
Complete the story
Become the Postmaster
Complete Willo's quest
Deliver the cake to the inventors house
Unlock all the Beelines
Discover Fosfor’s Lair
Defeat Screetch
Customise Yoku’s ball
Discover the heart cluster at the bottom of the sea
Complete the temple trials
Defeat the Spider
Befriend a Sootling
Save Spina
Collect the Divefish
Ride the Beeline
Toot the noisemaker 100 times
Suck up a slug with the Slug Vacuum
Find the Post-office
Free Kickback
Blow the noisemaker