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