Tip #1: Use the compound bow because it has no reload time and is fairly accurate. (If you went to the other city use UZI)
Tip #2: Give the big guns to your survivors.
Tip #3: DONT USE THE HUNTING RIFLE!!! (If you want to go ahead but don't come to me saying it's all my fault you died)
Tip #4: Don't stay in one city too long.
Tip #5: The chainsaw is very useful if a zombie horde is attack your barricade.
Tip #6: Don't leave the first city until you get the chainsaw.