Finding Celeste's Journals in Arc Raiders is one of the later quests you'll get given by Speranza's leader. She asks you to head to Dam Battlegrounds and track down two of her old diaries from the original Arc War days that she lost at various Raider outposts. The first one is easy enough, but the second only gives you a description to go on, so it's a bit trickier.
Since you have to extract both of Celeste's Journal items in one round, you may as well bring a free loadout, since a safe pocket isn't going to do you much good when you can only extract one of them anyway (unless you want to risk an augment with multiple safe pockets, I suppose). Whatever strategy you go for, here's how to complete Celeste's Journals in Arc Raiders.
