I've fixed up places where players were able to break out of the map. I have also made the cabin's top floor more vulnerable to attack, but not in the way one would think. Yes, there are two more routes to access it. But not quite.
I have also detailed the gulley a bit so the crashed van has a reasonable explanation to how it got where it did. I have also begun detailing the upstairs floor in the cabin, and have detailed the first floor, as well as added a new power weapon. It's not immediately obvious, but it should help a bit.