Originally Posted by JonNik 
Can't decide if the vertical exploration thing or the potion thing or the npcs not being knocked unconcious (that was a great little bit that delighted and surprised me in the first Gothic) bugs me most… We'll see …
I'm not entirely sure if the vertical exploration is actually different from their previous games. It didn't appear to be in the videos I've seen. I honestly think that belief might be due to a misinterpretation of something that was said.
I recall reading something about being able to knock npcs unconcious with coconuts.