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