I don't know if someone already made it, but I didn't find that anywhere so I decided to fix some bugs in the original coop campaign, and to put it on this website for those who are interested.
Here is the list of the bugfixes :
- in mission Loop1-2, player 2 won't stay in the enemy side anymore.
- in mission SM1-05, I removed an asteroid field causing collisions to the Trinity and destroying it at the beginning of the mission, causing a loss everytime;
- in mission SM1-06, the condition to activate some events (is-ship-visible) was unusable for multiplayer, and so events never went true. So I replaced the condition to activate them (and at the right time of course);
- at the beginning of the second part of the original campaign (SM3-05), only rockeyes, tempest missiles and subach guns were available, so I added the other.New version available (29/08/14)
Here's what is new :
- now treason missions (Loop1-2 and Loop1-3) will be fully playable up to 4 players (there were apparently problems with players 3 and 4 staying with the NTF...), and only humain players will be traitors : if a wingman is not human, he will follow the NTF...
So here is the link of the file : http://www.mediafire.com/download/8erxjl6lv74bxp3/Coop-missions_v1.2.zip
You simply have to download it, then extract to C...\Freespace2\mediavps_3612\data\missions or in ..\Mediavps_2014\data\missions depending on your version of Mediavps.
I hope it will be usefull for some people.