I hate being negative over someone's obvious hard work, but there is nothing new within this module to make it worth getting. Admittedly, it's only a $1.00, but that dollar could go for another download with more pertinent information.
There are a couple of interesting tables of the quantity of zombies verses the populations of elves, dwarves and humans and the introductory pages make for nice reading. It also treats headshots as if they are something new, which is strange considering that is the most well known way to "kill" a zombie. It also includes "freezing" a zombie to kill it. Save your money.