Here is the full list of all 19 Amanda the Adventurer achievements. It takes around 1-2 hours to unlock all of the achievements on Windows.
Baked a pie
Played a song
Wound the clocks
Waste not want not
Found the scissors
Learned about the weather
Can't believe I didn't get any presents...
Together forever
Tried to bake a peach pie
Played another song
Played peekaboo with Gret-chan
A touchy subject
Walk it off
Meet a violent end
Meat a tragic end
Meet a disappointing end
Meet the sunrise
...and a new friend?
Found Goggles