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.
Listen to all she has to say.
Collect all pieces of written information.
Laugh at the pointlessness of existence.
Solve every mystery in every land, that you might aid those who walk in your footsteps.
Bring the end of your generations.
Restore a backup version of yourself.
It's not for everyone!
It is never too late to accept Elohim's forgiveness.
Reach the top.
Don't just peek. Do it.
A little curiosity never killed the cat.
Do as you're told (for now).
Get everything on your own.
Expose the flaws in the code.
See what the others have to say.
Stand on your own two shoulders.
Find a Messenger's abode.
That's what axes are for!
Enter the Land of Faith.
Successfully engage in co-op mode with yourself.
Use the power of air to your advantage.
Run the sand through your robot hands.
Tell the others what you think.
...but let's be honest, it works the same.
Use the connectors to win a prize!
Pick up a star.
Search for other lands.
Enter Elohim's temple.
Pass the initial checks.
Try, fail, try again, fail again, eventually succeed.
Accept Elohim's wisdom.
Receive guidance from Elohim's messengers.
Communicate with your double.
Strike a deal.
Do not allow the serpent to fill you with doubt.
Internalise the voice of doubt.
Free Garrett.
Get your user profile.
Initiate the ascension process.
Rescue Admin from his prison cell.