I have went through and got 29 out of the 30 audio logs in ODST. My buddy and I originally got the other 29 audio logs in co-op. When one of us got the audio log both of us got the achievement. Because of this neither of us got all 29, it was who ever found it first picked it up. It also unlocked the log in our VISR. I go into Data Hive and every time when the soldier is supposed to drop down, he doesn’t. He stays up there and is killed by the buggers. My buddy and I tried it together as well on normal and legendary and he still stays up there to dies. Any ideas why this isn’t working?
I’m having this same issue too but I did it all by myself. I’m actually going through it right now to see if it might do it on another difficulty.
I think it is glitched. We have all 29 achievements and the soldier always dies on the data hive. No changes to difficulty or anything.
From what I seen, playing on the playlist. If you save and quit. The progress is reset and you have to go and hunt all 29 audio logs again before you do the final mission or you will miss it