Normally you can't play single player missions in multi player.
The reason are script commands which are not supported by the
multi Player Servers, which are crashing the Server.

Now HazardModding has developed a Script which allows to:
- Play in Co-Op modus ONLINE single player maps.
- Run 6 Secret Levels from Ritual on a dedicated Linux/Windows Server.
- Equip players individually with weapons teams and health.
- Spawn/Respawn players at a specified location.
- Define start and max health/armor for each level individually.
- Define max amount of regeneration for health and armor sperately.
- Automatically load next level.
- Set spawn location and spawn location for each player individually.
- Force one team, to avoid players from killing each other.
- Handle each player individually by target name.
- Send a message to all players at the same time or individually.
- Immobilize all players or individually.
- and much more...

Some features are shown in this video recorded and edited
by [dM]Modboy. this video is a co-operation of the
darkMatter-clan.com and HazardModding. using the
HZM Co-Op Script in version 2.0



Credits
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Maps and orginal scripts created by Ritual Entertainment.
Music by W.A.S.P ([The Neon God] Never Say Die)
Thanks for sharing the fun with us in the video:
- DRAGON JM
- doomseeker
- Gibbes
- Erk

Webresources:
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http://www.darkmatter-clan.com/
http://hazardmodding.chrissstrahl.de
http://forums.darkmatter-clan.com/index.php#8
http://forums.darkmatter-clan.com/index.php?board=28.0
ALTERNATIVE DOWNLOAD: http://downloads.darkmatter-clan.com/games/ef2/videos/video_co-op_mod.zip
Google Video Url: http://video.google.com/videoplay?docid=-3505004694149719954