Thanks! Yeah, papers please was the main inspiration.
The endings are as follows:
Executed: Disobey the sentence 3 times
Just: Give a minimum shock to the 2 "innocents": the graffiti kid and the guy with the dubious DNI evidence
Rebel: Give a minimum shock to the 2 resistance prisoners: the graffiti kid and the terrorist
Inconspicuous: Process all the prisoners without triggering any of the other endings