None needed since shows up on radar and in game through walls you see the word. But I likely am pulling the plug on my guide. My game save must be glitched because it now freezes every time i try to continue I was almost done on hardest play through
Another question: Are you doing a Blacklist collectibles guide/is one needed? I couldn't find a dedicated post for a guide and it seems like it might not be needed anyway if you can upgrade stuff to show the collectible locations.