I made my own food wall mission for it with 20 suspects and 19 hostages. I killed 12 of those 19 hostages making me have a -180 points for that, then I killed like all the suspects although 9 of them complied and that made me get -90 for killing 9 obedient suspects that made me have a -270 out of 100 one of the worst scores ever. The suspects had ak 47s, GSGs, shotguns, pistols and probably maybe even rocket launchers.