I am trying to upload a guide like this for every lost sector. They can be very simple and easy if you have the right build and I want to show that here since I have found many people struggle with completing them.
The build I am using focuses on ability spam and getting as many healing rifts as possible. I have Overload and Unstoppable mods equipped and I am using an Anti-Barrier bow to easily shoot through the Scorn Lurkers' shields. This is not required, but it makes killing them a lot easier. I like using Grand Overture since it easily kills the Overload Captains and can do lots of burst damage once you get 20 missiles loaded.
Let me know if you have any questions about how the build works or how to complete this Lost Sector.
0:00 First Room
2:20 Second Room w/ 3 Plates
8:03 Boss Room
10:30 Loadout