Here is the full list of all 9 Reality Incognita Demo achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Finish the demo of Reality Incognita
Prepare everything to go into the dark kitchen storage
Wipe the blood from the floor
Ask the Robot Butler to fix the electric box for you
Slice the chairs
Die when attempting to fix the electric box
Fix the electric box by yourself
Get out of Hibernation Room
Bathe in the shower room