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