IIRC, you have to leap up to touch the brick on the eave behind the tree to get to the NWC Headquarters.
Is there a quick save at all? (The usual RPG F5 or F8 don't do anything, so I assume that F9 won't, either.)
One thing bothers me. I seem to remember (perhaps falsely?) that turn-based combat was automatic, and that you had to press a key for free-for-all combat. Now it seems you have to press "enter" for turn-based. (Steam has a very bad habit of changing things in games "from outside." Case in point: if you're also an Elder Scrolls fan, Steam's Oblivion in Win10 makes it impossible to progress in the Fighter's Guild quests, beyond about the first two.)