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