Full list of all 25 Quantum Conundrum achievements worth 600 gamerscore. It takes around 15-20 hours to unlock all of the achievements in the base game.
The base game contains 15 achievements worth 400 Gamerscore, and there are 2 DLC packs containing 10 achievements worth 200 Gamerscore.
Use the menu item "Do a thing!"
Powered up the Uber-IDS
Achieve Goal Time on all maps
Achieve Shift Goal on all maps
Make it through every level at least once without dying
Collect all collectibles
Powered up the third generator
Solve "Choose Wisely" choosing each battery first
Knock Ike over with an object
View your portrait in all dimensions
Powered up the second generator
Powered up the first generator
Collect 1st collectible
Break 20 panes of glass
Pick up the IDS device
Achieved Shift Goal on all levels in "The Desmond Debacle"
Completed all levels in "The Desmond Debacle"
Achieved Goal Time on all levels in "The Desmond Debacle"
Completed all levels in "The Desmond Debacle" once without dying.
Collected all collectibles in "The Desmond Debacle"
Achieved Shift Goal on all levels in "IKE-aramba!"
Completed all levels in "IKE-aramba!"
Achieved Goal Time on all levels in "IKE-aramba!"
Completed all levels in "IKE-aramba!" once without dying
Collected all collectibles in "IKE-aramba!"