Based on reports from Xbox and PS4 users, it's possible that this achievement is glitchy, or at the very least the description is incorrect. This guide may only be valid if you have not yet completed the final stronghold and entered World Tier 1.
When you visit a safehouse you will have an icon showing you to a computer screen which will give you a project and show you all of the SHD Tech caches in the area. There are nine safehouses in total, each zone has one with the exception of the Dark Zones, the White House,
, and the stronghold zones. The project for each zone will be to; Resupply a friendly control point with 50 supplies, collect 4 SHD Tech caches, and to take part in three activities in that zone (The question marks on the map, although taking control points also counted for me.)
Once you have completed a project you will be given a bounty to kill the zone boss, it should pop up automatically but if it does not you can open the map and press
to show and track the bounties on your map. I believe all of the safe house bounties are normal difficulty, so they shouldn't give you much trouble even on your own. Once you have completed all
ten of these bounties you should unlock the achievement.EDIT:
There should actually be ten projects/bounties with one of them being tied to The Campus settlement in Downtown West. The names of the bounties are, Meatwagon, 12th Street Spicelords, Wolf Pack, Jefferson's Legacy, Lafayette's Regulars, Kindled Front, Peace Movement, Bully Buzzards, Embers Movement, and Simple Front West. You can check which you've completed by pressing menu/start, progression, bounties.