I got the custom edition, I read this article on how to get the original campaign http://hce.halomaps.org/index.cfm?nid=386 but i cant find the unmodded campaign levels, i got this map ui mod working to show the campaign option http://hce.halomaps.org/index.cfm?fid=4688

so this lumoria thing is the original halo ce campaign...thank for the reply

Yes. Lumoris is the original campaign. Bungie tried to go back in time and copy it but they failed to make it as good as Lumoris.

Welcome to Halo CE! For starters, you're probably better off using the Universal UI for your UI mod (get it at http://hce.halomaps.org/index.cfm?fid=6617), since that makes it a lot easier to play custom content for this game.

As for the stock campaign levels, here they are:
A10: Pillar of Autumn
A30: Halo
A50: Truth and Reconciliation
B30: The Silent Cartographer
B40: Assault on the Control Room
C10: 343 Guilty Spark
C20: The Library
C40: Two Betrayals
D20: Keyes
D40: The Maw

There're more mods and custom campaigns (like Takedown: Project Lawson, Project Lumoria, the upcoming CMT SPV3 etc.) and online coverage (Storm und Blackbird or the annual Halo CE3 livestream event) out there too, if you're interested~

thank you very much for all the responses