Not too bad for an incremental game. It's a neat concept, and fairly well executed. Graphics look good for the most part.
My main issue is that it's short, but drags out quite a bit if you're lookin to get all the achievements. Left it on over-night, but still didn't reach the final two achievements I need, the "Go to Bed" (assume 24 hours played) and Gold X (100 billion?).
It's also not very well explained what the deal with the undead is. The most annoying thing is without a doubt the lack of a Sell All button in the Shop, because after leaving this on over night I've got a shitload of items, and I'm not about to go through them all.