To play local on halo reach, start at the title screen when you start up the game. Hit main menu, then custom games. That is local gaming. (Meaning people on your xbox, not system link. For system link I don't know how.)
At the main menu press Y, and choose system link or online.
Yes but it's an Easter egg hidden in the new Alexandria mission
yes
Thank you based god.
Campaign can be played by up to two players locally, and four players over LIVE or system link.
No, they are two completely different multiplayer setups.
yes
go to multyplayer and press system link then go to host or start a game
Buy Bungie: Pro. There's a link in the fileshare area.
Yes evry game online does
you will need a hard drive and invite people.