Increase the water ganger leader's run speed while he flees; this should fix a bug that could cause a player to get stuck near the end of the mission if they killed all of the gangers before the leader managed to reach the back of the shack. Also un-enforced and then re-enforced orders on the water ganger leader; otherwise he could ignore the order to exit the map, which would strand the player while he wandered forever. I've updated the invisible stuffer shack actor to be invulnerable, immortal, and hide floaties; this should fix a problem where he would get hurt during the firefight, which looked bizarre. Finally, I added an explicit mention of the content's dependencies to its description.