Here is the full list of all 13 Into Samomor Demo achievements.
You obtained a kitchen knife
You ignored the caution sign
You made the first choice
You let the killer live
You beat The Parasite
You let the dog follow you
The killer is no more
Having Kara alive
Yup she's gone
You chose to believe Prin
You chose to believe Daniel
Somehow Fox is alive
Somehow Fox is dead