you must have xbox live to do 4 player as only two people can be on the same xbox!!!!
Be player 2 in the halo 3 co-op campaign. Or, play the Arbiter levels in halo 2.
Yes, there is a multi-player (odst) campaign and a new HALO 3 disc with a muti-player campaign
Yes, there is co-op in Halo Reach.
There should be a co-op in Halo reach because there was in Halo 3 and ODST why would they stop co-op there?
If you want to be an alien you have to be player 2 or up.
Another Spartan
yes. 2 player split screan or 4 player LAN
You can play 4 player co-op on Halo 3, but not all on the same Xbox. To play 4 player co-op on Halo 3 you can either have 4 people all on different xbox's and use xbox live, or have 2 people on each Xbox and either use Xbox live, or System link to join the parties together.
if you mean the intro tutorial of how to play just start on co-op and it skips it completely
The second player will also play as Master Chief in a co-op game.
yes it is trust me I have it. but you have to have to have xboxlive or sistem link
Everything in Halo 4 as of now is co-op. Campaign, Spartan - Ops, and Infinity (Multiplayer) Internet, local, and system link.