I was soloing Jewelry Store on Normal the other day to farm cards. When you have two or more players, jewelry store can be completed in less than 60 seconds: one person drops ECM and gets one bag, the other person tosses two bags.
Well, I didn't have that option. So I had to run in, van the first bag, drop ECM, van the second bag, scream at everyone, and try to make it back to the van before the cell phones came out and the coward escape driver bailed. It can be done, but it's hard.
So then I thought "What if I just kill everyone?". No matter how thoroughly I checked the area for survivors, though, someone always called the cops midway through my heist.
Does Payday spawn extra civilians mid-mission if enough of them are killed, or is the number of civilians (living or dead) fixed throughout?