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