I was just wondering if you can earn credits for multiplayer by playing the anniversary campaign.
If you wont be able to then maybe a good idea would be to reward players by claiming credits from halo waypoint after obtaining achievements in the campaign. Kind of like the waypoint rewards for the Security and cqc helmets.
Most likely it wont as the campaign is running on the original CE engine and some other third part one but not the Reach engine, not sure they could integrated the credits system.
Not saying it would be impossible, not by any means, but I seriously doubt it has been implemented in to the campaign.