This game would be a lot easier those stupid civilians didn't mill about and push you out of the way.
"Herpaderp, excuse me officer, just passing through, sorry for pushing you into a swarm of zombies there but I'm so busy, got places to go, herpity derpity derp."
As harsh as it sounds, being able to order the police to force-fire on anyone who's been bitten (or is pushing you around, or is blocking your way, or is just bothering you) would make this a lot easier.
 "Shameless clone"){kind=icon}
 "Class 3 Outbreak"){kind=icon}