Here is the full list of all 22 Unknown achievements.
Escape Alone
I didn't do anything.
I became the same experimental as my parents.Cavia porcellus is the scientific name of the common species guinea pig.
Failed to escape before a Mansion explodes and is burnt down.
Escaped with Rebecca.
Escaped with Marian
Both my parents are missing.
The stalker was obviously caught, but he saved me.
I'm into nostalgia for my childhood.
I was able to get things done with my thorough preparation.
That's too loud.
A female monster melted by W.Potion.
You can draw this shape with a one line.
My body is not strong enough to stop this.
I met Rebecca on the boat.
A picture of my mother.
I was torn out of his hand.
I returned home along a long forest road.