ok here is the way i passed the game.... it was easy for me..... in the first night try to recieve as little damage as possible... in the day repair it not to 100 but to something uper tahn 90... the rest look for survivors not for weapons (susrvivors will give u more repaire for each hour) and survivors fight too so the are a big help.. keep looking for survivors until u defeat a cop wich will give u another gun... due to the fact that more survivors=less time repairing youll have more time for doing everything...just keep a lot of survivors cause the will help u a lot
good look with the sniper badge!