There should be a co-op in Halo reach because there was in Halo 3 and ODST why would they stop co-op there?
Chat with our AI personalities
It will do it automaticly.
As far as I know there isn't a co-op mod for the PC
halo
yes u go to play multiplayer and then u go to co op then u press a then u play the lvl u want to
Up to two players can play in the Co-Op Campaign mode on Halo: Combat Evolved.