"Okay, everyone understood, right? As long as you follow the plan, without leading any evidence towards me, when we leave this prison, you all will be properly compensated", Big One spoke to the criminals that he just set free.
The ten criminals agreed with his plan.
Of course, not everyone agreed when they were released, but Big One swiftly dealt with them. It was why the total number remained at ten, even though he had to clean two hallways.
He could have just killed one to make others comply, but he didn't. He silenced everyone who raised their voice.
This was a critical mission, which he couldn't let fail, no matter what the cost. This would decide his future. Whether he can become the leader of the cult or become a part of a dump depends on what happens here.
Even a small variable can divert the mission from being completed. So, he eliminated all the variables from the released prisoners.
This was not just the situation with Big One.