Here is the full list of all 12 Dawn achievements. It takes around 1-2 hours to unlock all of the achievements on Windows.
Finish the game once.
Finish the game in autumn colors.
Use the wind to recover from a fall.
Finish the game with seven or fewer vines grown.
Finish the game with all vines grown.
Grow two or more vines at once.
Finish the game with all flowers bloomed.
Activate all ruins in one game.
Bounce on jump pads 15 times in a row.
Finish the game in five minutes or less.
Find the hidden sun.
Obtain all other achievements.