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