Allegedly, we were supposed to see more of the Nazi-Ghosts, but the lack of money meant substandard make-up. So they wisely kept the villains in the shadows, which is always a better idea. Then when we do get a good, hard look at these monsters, the make-up can be a little more frightening. I suspect that if "Outpost" had more money to work with, it wouldn't have been as effective.