In order to reach the point where you can work towards this achievement, you will have become quite proficient in Breach Mode. So, this guide is not going to dwell on the basics of reading maps and clearing servers. There are many different viable approaches. I have outlined my strategies in guides for the Data Disciple, Expert, & Master achievements. Moreover, I have an in-depth video guide for the Data Detective achievement that illustrates the tactics and strategies that I used throughout Breach including
https://www.trueachievements.com/Deus-Ex-Mankind-Divided/dlc...There are more than 10 Santeau servers. They appear to be regular server map servers but do not count towards the Data Expert or Data Master Achievements. Use
to roam the maps and check the servers by pressing
. The owner, e.g.
Tarvos Group, appears at the top above the server name. The Santeau servers, naturally, will have the Santeau Group name at the top. The Santeau servers can also be identified by their logo that looks like a white square with rounded corners with a large circle cut out of it near the bottom left corner.
All five servers in the fourth Darknet File count towards the achievement. They will not appear until you have unlocked the file and, to do so, you must complete the third Darknet File. So, completing, or working towards, this achievement will help in the completion of the 10 Santeau servers:
I was able to find eight Santeau servers on the server maps:
Tier 1B: S12_CAISSON
Tier 2A S21_REBAR, S22_REBAR, & S23_REBAR (Transport Data)
Tier 3A: S15_REBAR, S16_CAISSON, S17_REBAR
Tier 4A: S08_CAISSON
Accordingly, I needed two Santeau Darknet servers (DF1_CAISSON & DF2_CAISSON) to unlock this achievement. The other three Santeau Darknet servers are DF3_REBAR, DF4_CAISSON, and DF5_CAISSON. The Santeau servers are more expansive than other servers. However, they all feature an abyss so, once the conditions to clear the server are met, you can jump into the abyss to respawn at the exit point. The achievement unlocks once you clear the tenth Santeau server which may be a Santeau server on the server map or a Santeau server in the fourth Darknet file.