Here is the full list of all 7 Rituals achievements. It takes around 1-2 hours to unlock all of the achievements on Windows.
You discovered a secret surveillance room.
You read all the magazines!
You either misread Gaia's messages or wanted to end the human race. The Earth is no more.
You saved the planet, let the silence be your reward.
You're a master locksmith.
You fed the crocodile more than three times.
The lift's not there.