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