This achievement is possible glitched, but I got it after a while, here's some things you
might have done wrong...

1.) You have to wait for the "Fragment Ends" message to come on before the game registers
that you've got the terminal. The only exception is Terminal #2 on the level "The
Covenant," this one does not give that message. Hit the A-button to scroll through a few
messages, then the terminal will turn red and a few more screens will need to be read
before the "Fragment Ends" message appears.

2.) Try starting from the start of the level to get them all, that means no starting at
checkpoints to get ones later in the levels.

3.) I'm not sure if it matters, but do it in solo instead of co-op, because I got them all
on co-op and it didn't get it. I just got it one time randomly, I just kept getting the
terminals whenever I was going past them and it eventually got it.

Thanks for your help

Does it have to be on normal and up my bro said to do it on easy and it didn't work

I wouldn't know because I never played on easy anyway, but you could give it a try. I
know that stuff matters with some skulls, so mayby it would be with terminals as well.

did find 7 or not because there 7 terminals

ye you have to do it on normal and up for it to work