So I've completed the campaign on CO-OP on legendary and unlocked EOD Helmet (You unlock this helmet by completing it on legendary). But when I go to my service record, it says I've only completed it on Normal. On solo campaign I have all the missions done on Normal except for Arrival, which was done on legendary. how do i fix my service record to say the right thing?
Halo 3[Xbox One] - Legendary Campaign Issue