Talk:The Russian Sleep Experiment/@comment-25571922-20141023125025

I think I have an answer to the numbers issue. The last subject and the researcher are the same person. Note what the subject says: "We are you.....". From the shear nature of this experiment, the subjects have attracted many demons. The demons easily inhabit the subjects, accounting for their inexplainable strength and insanity. When one researcher shoots the last subject, the demons inside him are released and go straight into the researcher. This researcher goes completely mad and has an internal struggle which leads to him shooting himself.

That is your answer. 6 subjects; only the 6th subject is actually one of the researchers.