I have all the terminals for halo 4 and there is a code at the end of the last terminal video. I have entered it many times and it tells me no data. Why?
My guess: you need to do something else besides just entering the codes. I took care of those a while ago so I can’t say exactly what you might need to beat, and on what difficulty level you need to be on, but there’s plenty of youtube videos that take you through this stuff. I’m sure you can find it on your own initiative.