Easy way to beat walkers:
An easy way to beat walkers is to have a machinegun and flamethrower
A big Boom!!!!:
On the second level (when you get out of the helicopter for the second time). You will find a man in the building. heal him and tell him to follow you.after you get him away from the place he was you will see two canisters shoot them two times. after they explode use your fire extinguisher to put out the fire. In this room you will find ammo and a flame canister with one reload.
Simple Strategy 1:
Always keep your team members well stocked with arms and ammo, even if they are infected. It is easier to kill an infected member and take all his stuff then it is to backtrack trying to find more ammo.
Don