- To get this Side-Mission you must make this decision during the main quest:[ Attempt to turn Phineas in to The Board through your conversation with Udom Bedford in the Halcyon Building on The Groundbreaker ]
- Doing this will get him to tell you that you must get his "Seal" from Gladys for just over 5000 bits I believe. Once you do that he will tell you to go to Sophia on Byzantium.
- She will then ask you to "Deal with the Cartographer"
which caused Felix to get taken off of my squad (by choice lol)
- Following the quest you'll find she's hiding in the Byzantium Maintenance Tunnels... go down there (shown in the video)
and take out that loose end to acquire this achievement :)All of my HD Achievement Guides for The Outer Worlds can be found here! :) (Mobile Friendly)https://www.bradleafsfan9.com/the-outer-worlds