Was playing OC dock on Saturday with another player called Tec, and I got totally confused. How do you beat the map? I managed to figure out a few things - if I charge out to the next door I can release a few zombies, who seem to distract the vorts a little. Turning on the gas tank stops the zombies from storming the human spawn point. After all the vorts are killed (thx to Tec) it's possible to use the crane to knock down the bridge on the right. But there's where I got stuck. Antlions keep spawning, and the buggy cannot be taken across the bridge. Where am I supposed to go next?
One player has to use the crane to lift the other player (sitting in either the car or a metal crate) over to the next crane platform. Then the lifted player has to get in that crane and lift the other player over, and so on.