Here is the full list of all 25 Paperbark achievements. It takes around 4-5 hours to unlock all of the achievements on Windows.
A New Home
The Cool Change
The Bushfire
The River Birds
The Wetlands
The Paperbark Tree
Scare plenty of fairy wrens
You did it!
A New Home (Ending Two)
A New Home (Ending Three)
Collect all of the Yellow Albatross Butterflies
Collect all of the Gumleaf Grasshoppers
Collect all of the Blue Skimmer Dragonflies
Collect all of the Helena Gum Moths
Collect all of the Stickers
Collect all of the Green Grocer Cicadas
Eat all the food patches
Break a lot of sticks!
Sufficiently annoy a Spoonbill
Finish the story in under 18 minutes
Tap on all of the sounds in the sticker library
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Complete all other Steam Achievements
Find all the hidden critters