I don't know if this is a known problem or not, but I finished off all the aliens in a map, but the mission did not end, and the last alien never did make an appearance. I ended my turn about 20 more times and nothing happened. The only thing I could do was abort the mission, which of course killed all my soldiers. Obviously, I don't want to do that too many times. When I aborted, it said one alien survived. I looked everywhere, but couldn't find it. Is it possible for aliens to get stuck inside structures when the map is being drawn? Anyway, it's the map terrain02d, where you go through a house and across (or around) a concrete walkway over a culvert.
