I can see multiple ways things went wrong here.
not in your writing but in character behavior.
there is an anomaly, a guy gets out of there alive even if he was not supposed to:
worst case: he was food for a god who is now hungry
and no one knows which one it is (thats why you ask thees guys where they came from before axing them)
most likely case: a biological anomaly is now buried outside of foundation custody with some fresh food for good measure
another way this could go wrong: mindeffector or unknown side effect to some other test
and i thing there is an "a" missing in
"I awakened myself a short moment later, and started to crawl forward. It was metal tunnel. I placed my hand on the floor. It was wet. It smelled like blood. There was a glimmer of light at the end."
It was metal tunnel
"Rengstorff, stop!" another voice shouted behind us. His voice was drowned out by the chanting crowd, now louder than before. The crowd of orange condemned me, those disgusting people. I saw the eyes of devil among them, paving the road for me to hell.
I saw the eyes of devil among them
eyes of devil´s (but don't quote me on the ´)
at this time a version of me is already walking the halls of the foundation and he is plotting, designation POI-5.
if this is going in the direction of a ci origin story we could cooperate on it.
Edit: After reading it again, it could very well already be an insurgency.
in 24 the 05 formed the first insurgency, in 48 the ci openly deflected.
who said that there was only the big split?
Fun fact: there is a 10 percent likelihood to survive a head shot.
other fun fact: there is no checkup on the personal quarters apparently.
Fighting Monsters and Language since 2016.
(Yes, i know its Fiction.)