I played the game as part of my birthday celebrations with Dom of Nothing But 1s. He is mainly a Batman player, but we both seem to think that this game was pretty good.
I started with the Walkers, as they were the easiest of the models, and I stole the Monochrome paint scheme that I saw in the Walking Dead group on facebook. Despite this, I think that they have come out reasonably well for a quick job.
Step 1 - Paint the white undercoated models with Khorne Red
Step 2 - Drybrush the model with Tyrant Skull Dry paint
Step 3 - Wash the model with Agrax Earthshade
Step 4 - Paint the base Black
They aren't the prettiest paint jobs, and they might get touched up or fiddled with at some point in the future, but for now, in groups, they look pretty effective.