u dont unlock it it already comes unlocked
When you get into the main menu, click on the 'Campaign' button, and then start the campaign from that sub menu.
you go to matchmaking and go to coop campaign...
it was never locked
There is no way
no halo "campaign" is a single player game
You put in your Halo 3:ODST campaign disk and go to play the BETA and download it.
No set grade, play whenever.
There is no way to get it without the Halo 3: ODST Campaign disk.
I've seen someone play the campaign as a jackal by modding their game.
yes
You need to put in your copy of Halo 3:ODST campaign and go to play the BETA and download it.
Campaign should be one of three options to choose from when you first play Halo Reach. It will show up along with Matchmaking and Theater on the main menu.
No, that would be silly.
Yes, you can, but not in the campaign. Only in custom games, matchmaking, ect.
Halo reach by far, far less gross and violent. Best Halo campaign ever, great online play nad fantastic armor!
To get credits in Halo: Reach with a silver, or offline account, you need to play offline Campaign, Forge mode, or local Custom Games.