Here is the full list of all 17 The Gardens Between achievements. It takes around 2-3 hours to unlock all of the achievements on Windows.
A sneaky stowaway Garden Friend.
Super Silly Crow is defeated.
A Cosmic Garden Friend phones home.
Release the hidden Garden Friend.
A Garden Friend gums up the pipes.
A Garden Friend follows on a school trip.
Restore the board to a clean state.
A Garden Friend sneaks a look.
Super Silly Crow escapes the TV.
Arina throws popcorn at Frendt five times.
A Garden Friend is hiding in the Esky.
Friends apart, memories remain.
Arina really shouldn't be pressing buttons.
Pluck the moon right out of the sky.
Arina’s at the end of her rope.
Saw the plank. Next, get a hammer.
What's under the table cloth?