Getting commendations on the campaign is an easy way to rack up credits especially early on. If you do have Xbox live it is extremely easy to get large amounts of credits by doing score attack mode in firefight from the matchmaking menu.
You always get credits in halo reach until you reach inheritor, you only get banned if you get said credits illegally...
Halo Reach is definitely for single player. Campaign and Forge, you can do alone, but you will get the most amount of entertainment out of the multiplayer modes.
no
you dont
no halo "campaign" is a single player game
x credits
To get credits in Halo: Reach with a silver, or offline account, you need to play offline Campaign, Forge mode, or local Custom Games.
Yes
rank up to brigadier and buy it for 300,000 credits.
300,000 credits
you get banned by modding credits instead of earning them yourself
you CANNOT get 3 billion credits on Halo Reach. People who you see on youtube getting 3 billion credits in Reach are modders because there is a "credit cap" so that you cant go over a certain amount of credits.