never give all your survivores guns.Heares a good survivor order.
Leader,scavenger,scavenger,medic,recon,medic,recon,and never send all your suirvivores on a msshin and leave because then your base is ungarded.
wacth your step people put traps and bombs every whare
never give all of your suirvivores guns or you will run out of ammo fast and not be able to attack or defened then your in trouble trust me i know from expireience and another reson its better to have melee wepons is you can brake threw barriers