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 not allow the serpent to fill you with doubt.
Strike a deal.
Try, fail, try again, fail again, eventually succeed.
Receive guidance from Elohim's messengers.
Accept Elohim's wisdom.
It is never too late to accept Elohim's forgiveness.
Laugh at the pointlessness of existence.
Communicate with your double.
Collect all pieces of written information.
Bring the end of your generations.
Reach the top.
Solve every mystery in every land, that you might aid those who walk in your footsteps.
Listen to all she has to say.
Don't just peek. Do it.
Restore a backup version of yourself.
It's not for everyone!
Do as you're told (for now).
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.
That's what axes are for!
Successfully engage in co-op mode with yourself.
Use the power of air to your advantage.
Tell the others what you think.
A little curiosity never killed the cat.
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.
Initiate the ascension process.
Rescue Admin from his prison cell.
Free Garrett.
Get your user profile.