Although all you guys know that back in Halo 3: ODST there was Audio Logs. There are about 30 different logs to find and some times they are hard to find. But what is worst is that when you restart a game from the stream and have not found all the logs. You are S.O.L. because when you only found maybe 10 different logs and reset. The Game does not Reset at all. It knows that you have these 10 but if you like to find more. Well there is where you are out of Luck. They all disapper. I like to know if they have find away to fix this are is it still and S.O.L. thing for this game. Please let me know.
I’m not 100% sure what you mean but what I can say is you can just pull up Mombasa Streets on Easy and go to Youtube and find a guide that gets you to all of them. One in particular will show you were all of them are per zone. Hope this helps! Good luck!
Edit: You can find 29/30 in the city. #30 is on the mission Data Hive and you must have found the previous 29 before you can get this one and you might have to be on Normal.