Here is the full list of all 6 Fox! Hen! Bag! achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Solved the riddle.
Tried flying down the mountain.
The fox ate the hen.
Helped the skeleton get down to the bottom of the mountain.
The hen ate the bag of grains.
Pressed the cable car button at least 5 times continuously.