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