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