ah ok. Maybe that's why, maybe the bug is only on the pc version. Did you alos clean the two secrets camps (during the quest Rose on a red field) ?
I was wondering that too about an enemy bleeding out if that is what's causing it to not pop. I'm on X1 so it's not platform specific, it's a cross platform bug.
For me Your hint didn't work. so still no trophy. CDR please fix it and he best in retrospective way, so I would not need to loot the camps again.
Have you tried your guide with a save instead of starting with HoS?Did you try the guide mentioned above? I was stuck for days before trying this way.
Okay, I may have found a fix! Like many of you, I had attempted this achievement several times but, no luck. Well, until recently. Try this: [xbox one editon]
1. Start a new game of HoS (not NG+)
2. Don't fast travel, call Roach and set waypoints. All 8 bandit camps and locations can be found online (you ONLY need the 8 camps).
3. Loot everything; corpses, yellows items, and save red items for last.
4. Don't drop ANYTHING.
5. Make sure to read notes/letters before moving to the next camp.
6. This was my order; moving from the upper left most bandit camp near Sarrisin Grange, I moved clockwise without fast traveling, finishing up west of Erde.
You should now have the achievement. Hopefully, your achievement will pop by the time you have killed the final bandit at the last bandit camp. Hope this helps, good luck everyone!