Hi im new and got a few questions.
So as far as i know Halo CE does not support multi-player/co-op play with AI's, is this correct?
If so are there any exceptions or maps that allow this succesfully? Cuz it would be fun as to just team up and play co-op against some stupid AI's.
Is there a campaign mode for Halo CE? i mean i know there is no single player, but is there like a map for co-op campaign?
If AI is suported in some cases, is there any like uh zombie mode/infection/quarantine survival agaisnt zombies map for co-op?
:D Answer any please

1) Correct.
2) No.
3) Yes, you can find various single-player maps here http://hce.halomaps.org/index.cfm?pg=1&sid=37 or here http://hce.halomaps.org/index.cfm?pg=1&sid=27. To play these maps, read this http://hce.halomaps.org/index.cfm?nid=386. Co-op is not supported by Halo CE.
4) Don't really understand you here, but AI is not supported in multiplayer.

Also, please read the sticky threads in this forum.

4) Yes, however it isn't perfect. If you play the same map over the same network using LAN, you can experience "similar" results as to say Halo 3's coop Campaign. It is NOT perfectly synced.

Thanks guy... i meant like is there a zombie survival map where you fight off hordes of flood/infected/zombie.

yes there is its a sp map but its still in the work in progress stage.
there 3 in progress that has been publicly announced

There's tons of them.
Look at the single player section.

http://hce.halomaps.org/index.cfm?fid=3074

the floods is a mp one... but its awsome has minor ai syncing issues but its awsome