Phobos Incident is going to be a full-fledged campaign for Alien Swarm. It can be considered as a re-imagining or an alternate future for the base that was the place of action in the game Doom. Now four marines are sent to investigate a distress signal in a place that could be Phobos moon base 17 years after. Some things have changed, some have remained.
Something I've managed to do in the past week or two.
Might have tad bit too many info_nodes out there.. but who knows if they prove out to be useful. E.g. mean players trying to block the path.
Dayam, those are a lot of info nodes.