At the begining of the game make a spiked bat (nails and bat) and the I.E.D. (propane and nails). Run outside the safehouse and keep using the I.E.D. on the zombies in front of the gas station until it breaks. Unlock Bob's hunting shop and take both shotguns and run to the hardware store killing zombies with the spiked bat you made as you go. Find two pitchforks and go next door to the construction table and make a boomstick (shotgun and pitchfork). Using the boomstick you will be able to kill a multiple zombies earning 200 PP for each kill. When the first boomstick breaks make a second one and after both have broken go back to the safe house and repeat the process.
Added by: Sanzano Oct 6th 2010, ID#6357