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 saved the planet, let the silence be your reward.
You read all the magazines!
You fed the crocodile more than three times.
The lift's not there.
You either misread Gaia's messages or wanted to end the human race. The Earth is no more.
You're a master locksmith.
You discovered a secret surveillance room.