Well something i noticed while watching ze wizard gameplay vid, in the graveyard she's shooting all these bolts everywhere at zombies. Then she kills this one zombie and he tumbles over the wall out of the map, but even out of the map he tumbles a bit off the ground. So that brings me to the conclusion that the area outside, which is for decoration, is interactible too...in a matter of speaking. Which is probably one of my favorite aspects of the game, theres nothing better then cleaving a zombie off a cliff and seeing him toumble down 8D
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