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