Full list of all 40 The Talos Principle achievements. It takes around 25-30 hours to unlock all of the achievements in the base game on Windows.
The base game contains 36 achievements, and there is 1 DLC pack containing 4 achievements.
Collect all pieces of written information.
Listen to all she has to say.
Expose the flaws in the code.
It is never too late to accept Elohim's forgiveness.
Reach the top.
Laugh at the pointlessness of existence.
Don't just peek. Do it.
Restore a backup version of yourself.
Do as you're told (for now).
Do not allow the serpent to fill you with doubt.
Receive guidance from Elohim's messengers.
Communicate with your double.
Find a Messenger's abode.
See what the others have to say.
Accept Elohim's wisdom.
Tell the others what you think.
Try, fail, try again, fail again, eventually succeed.
Pick up a star.
Get everything on your own.