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.
Reach the top.
Don't just peek. Do it.
Get everything on your own.
Communicate with your double.
Try, fail, try again, fail again, eventually succeed.
See what the others have to say.
Accept Elohim's wisdom.
Restore a backup version of yourself.
Receive guidance from Elohim's messengers.
Find a Messenger's abode.
Tell the others what you think.
Pick up a star.
Laugh at the pointlessness of existence.
Do as you're told (for now).
Expose the flaws in the code.
Do not allow the serpent to fill you with doubt.
It is never too late to accept Elohim's forgiveness.