Here is the full list of all 45 Broken Age achievements. It takes around 12-15 hours to unlock all of the achievements on Windows.
Unlock all Broken Age Achievements
Complete Broken Age in under an hour, not counting loading and paused gameplay.
Make someone strut their stuff
Stand up for someone even though you haven't met him
Tell a great joke in one attempt
Clear up a tangled situation in one attempt
Execute a PERFECT escape
Answer some tough questions quickly
Feed two different people a healthy snack
Get to know someone in a precarious position
Complete all rescue missions with zero errors
Hear 20 reasons why Gary won't grab that
Complete Broken Age
Start a group dance party
Stand up for someone even though you haven't met her
Talk to the boss
Complete Act 2 of Broken Age
Chart a course away from danger
Deploy a weapon of mass destruction
Return a missing spaceship part
Find a genius
Reconnect with some old friends
Get to know a stranger
Remove 8 sad faces from the Bassinostra
Uncover an unsavory scheme
Get to the ship's brain
Find 30 unique reactions to the Spoon
Commission a custom garment
Visit someone in jail
Follow up on a successful performance
Return a heavy duty spaceship part
Get a family member's help on a big project
Complete Act 1 of Broken Age
Take down Mog Chothra
Travel to a forbidden location
Inhibit a powerful entitiy
Take Control of the Boom Arms
Disrupt Shay's daily routine
Endure a tight situation as long as you can
Leave an isolated town
Reunite a mother and child
Escape the Maidens Feast
Learn all you can about Sugar Bunting
Examine all breakfast options
Make a Spoon Sweat