Here is the full list of all 12 Lamias Game Room achievements. It takes around 1-2 hours to unlock all of the achievements on Windows.
WHO_DO_YOU_THINK_YOU_ARE
Owner of the room
Sherlock Holmes
Carnation
Love and bread
Unrequited love
Blockhead
Blood is thicker than water
Maternal love
Those who are ignorant are innocent
Old glasses
The origin of problem