Here is the full list of all 19 Shardlight achievements. It takes around 6-8 hours to unlock all of the achievements on Windows.
An age of uncertainty, but of happiness.
You maintained the status quo.
Played through the game with commentary.
You completed the game.
Tip your hat to the new revolution.
Properly disposed of the severed arm.
You don't mind being poked and prodded.
Said the code phrase to everyone.
Gain Jess's trust.
You couldn't let a friend suffer.
Tasty, but think of your triglycerides!
Nothing like a nice hot meal.
Figure out why the rebel doesn't speak.
Listen to every single comment Denby makes inside the factory.
Don't encourage him.
You're the most well-read person around.
You drew the symbol correctly on the first try.
You're never too old to have fun.
Gus doesn't know art, but he knows what he hates.