I finally did it, after all these years... 6 years after getting The Solus Project I finally got Fable Horder, only took me about 100 hours of poking around and re-tracing my steps. The unmarked crew photos and the monuments which tell you local artifacts were the hardest ones to track down.

So I am here to help with anyone's questions about tracking down the last secret or lore item you need for your 100% completion goals.

Before you ask your questions, let me direct you to the most useful guide on the internet for finding things in The Solus Project, which is Lifoux's guide here on Steam: https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=630495858
Specifically the last part with the coordinates of the crew/fan photos. That part is of tremendous help since they aren't marked in your Explorer Diary but are required to complete Fable Horder.

Post your questions here, and I'll help you the best I can.

Cheers~