I picked these figs up at a convention, last year, on the cheap. I put the multi-part plastic figs together, and wasn't really impressed. They languished on the shelf for a long time. For the price I paid, they were a great bargain, though. The quality and crispness of the parts leaves a lot to be desired. In the end, though, they painted up well enough to fill out a zombie horde.
Some of the figs you can put together are nice figs; others, though not so much. Here's a pic of some of my more favorite finished figs. You can see that I used some Mantic zombie heads, in place of the WGF ones. They work with some of the torsos.
Lead Adventure Forum. Basically, you prime in a light color, and then use washes and stains to finish the figs. It was quick, about 4 hours to totally finish these 23 figs. For quick and dirty, playable figs for the table, I may use it again.
For the record, the figs that WGF has in their on-line shop are painted very nicely, and show what someone with a lot of talent, time and patience could do with these figs; you should check them out.