I was in a lighthouse, getting a good vantage point to scope out the next city. I climbed down to continue on. As I finished my climb, my character stood for a second and the screen went black, saying I was dead followed by the red text telling me my legs were in pain, etc. This was a gentle, slow climb down the ladder. I just spent all day getting to an airbase to get another m4 after my character was reset, which was a pain mind you since the zombies are indestructible. Then this happens. You can imagine my peeved feelings.