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