I absolutely LOVE the gooey touches to the gun barrels at the front. Not to mention those nasty zombies crawling out of the goop in the back, of course. Really amazing paint job.
The idea is great, and so is the realization :)
But... I think it's a bit monotonous, would not have been better to add some chaotic icons or other elements that characterize?
Excellent paint job, didn't think it really depicted the corruption of Nurgle well however until I saw the last photo showing the vile pool in the back - way cool.