Mass Effect: Armstrong Nebula - Uncharted World walkthrough Mass Effect Guide
Last update: 18 May 2021
13.2. Armstrong Nebula
13.2.1. Gagarin System
Planet | Explorable | Surveyable | Collectibles |
Junthor | no | yes | Asari writings |
Rayingri | yes | no | Rare earths (x2), light metals, League medallion |
Antirumgon | no | yes | Light metals |
Pressha | no | no | - |
Sogelrus | no | no | - |
13.2.1.1. Rayingri
 | Planet Rayingri 1. Scavenger corpses 2. Light metals 3. Crashed probe 4. Rare earths 5. Overrun research outpost (Geth activity) 6. League medallion 7. Rare earths 8. Abandoned scavenger camp |
Geth activity (part I)
Hint! This assignment will be available after completing mission on one of three main plot planets (5. Therum, 6. Feros, 7. Noveria). You can get it in three ways: by examining terminal on Feros, by examining terminal on Virmire or just by entering any system in Armstrong Nebula.
First you'll learn only that in this region an increased geth activity was noted. It looks like preparation to an invasion and is worth investigating.
This assignment consists of five parts. First you need to eliminate geths on planets Rayingri, Casbin, Maji and Antibaar (in any order). After eliminating four outposts, you'll get information about main geth base on Solcrum (13.2.2.1.). Clear it to complete this task.
On Rayingri head to overrun research outpost (Rayingri - 5). Park Mako near the entrance and get inside.
There will be some zombies there and then geths. After clearing the building, get outside just to encounter another group of enemies. You can eliminate them right away (more experience points) or after getting in Mako and using turret.
The first outpost will be captured, there's three more. I suggest to choose the one on Casbin first (13.2.3.1.).
13.2.2. Grissom System
Hint! This system unlocks after completing assignment 13.2.1.1. Geth activity.
Planet | Explorable | Surveyable | Collectibles |
Benda | no | yes | League medallion |
Zaherux | no | yes | Light metals |
Solcrum | yes | no | Light metals, rare earths (x2), asari writings |
Notanban | no | no | - |
Rocky asteroid (hidden) | no | yes | Rare earths |
13.2.2.1. Solcrum
 | Planet Solcrum 1. Rare earths 2. Rare earths 3. Geth base 4. Light metals 5. Crashed probe 6. Asari writings 1 hazard level |
Geth activity (The geth base)
Hint! This task is only a part of assignment which takes place on few planets. Basic information can be found in 13.2.1.1.
Geths have chosen Solcrum as operation centre while preparing for invasion. Their base (Solcrum - 3) is strongly protected. It is guarded by two colossi from outside and tough troopers inside.
Eliminate the colossi from the distance, jumping above their shots. Inside start the fight hiding behind the door and move forward little by little, using covers along the way. When the last enemy will fall, you'll get information about strange presentation on the screen.
At this moment you can come back to Normandy, but you can also go to the room on south and use the terminal there. This way you'll get data useful not only to the Alliance, but also for quarians. It's good to talk about them with Tali.
13.2.3. Hong System
Planet | Explorable | Surveyable | Collectibles |
Casbin | yes | no | Rare earths (x2), heavy metals, salarian ID |
Matar | no | yes | Asari writings |
Treagir | no | yes | Light metals |
Pomal | no | no | - |
Thesaca | no | no | - |
13.2.3.1. Casbin
 | Planet Casbin 1. Anomlous signal (geth trap) 2. Heavy metals 3. Geth outpost (Geth activity) 4. Rare earths 5. Salarian ID 6. Engine debris |
Geth activity (part II)
Hint! This task is only a part of assignment which takes place on few planets. Basic information can be found in 13.2.1.1.
This time you don't have to leave Mako to eliminate the geths. Ride near their base (Casbin - 3) and shoot from the distance to get rid of most enemies. Then come closer and finish the survivors.
Once they are will be defeated, a geth dropship will come in and begin depositing geth shock troopers in the center of the outpost. Concentrate on destroying the ship first and geths later.
The second outpost will be captured, there's two more. I suggest to choose the one on Antibaar as next (13.2.4.1.).
13.2.4. Tereshkova System
Planet | Explorable | Surveyable | Collectibles |
Carbonaceus asteroid (hidden) | no | yes | League medallion |
Antibaar | yes | no | Light metals (x2), heavy metals, prothean data disc |
Patamalrus | no | yes | Heavy metals |
Thegeuse | no | yes | Heavy metals |
Hunsalra | no | no | - |
Mawinor | no | no | - |
Solmalron | no | no | - |
13.2.4.1. Antibaar
 | Planet Antibaar 1. Geth outpost (Geth activity) 2. Crashed probe 3. Light metals 4. Heavy metals 5. Prothean data disc 6. Light metals |
Geth activity (part III)
Hint! This task is only a part of assignment which takes place on few planets. Basic information can be found in 13.2.1.1.
Dealing with the geth outpost (Antibaar - 1) on this planet doesn't require getting out of Mako. It will be strongly guarded though, so it's better to eliminate snipers and rocket troopers from the distance. Paradoxically, colossi won't be very dangerous - it takes a long time for it to shoot and its shots are easy to jump above. That's why it's good to leave him for later. When the outpost will be cleared out, reinforcements will begin arriving, but you shouldn't have much problem dealing with them.
This way there will be only one outpost left - Maji (13.2.5.1.).
13.2.5. Vamshi System
Planet | Explorable | Surveyable | Collectibles |
Maji | yes | no | Rare earths, light metals (x2), turian insignias |
Pregel | no | yes | Turian insignias |
Almos | no | no | - |
13.2.5.1. Maji
 | Planet Maji 1. Geth outpost (Geth activity) 2. Light metals 3. Light metals 4. Crashed probe 5. Odd skull 6. Turian insignias 7. Rare earths |
Geth activity (part IV)
Hint! This task is only a part of assignment which takes place on few planets. Basic information can be found in 13.2.1.1.
Geth outpost on Maji is guarded by turrets system. That's why you'll need to eliminate them first. It won't be difficult, because you'll be able to see flashes of shots from the distance.
Then you'll have to deal with geths guarding the outpost itself. Don't come very close though, because after eliminating them, a colossi lying by the base will activate. Only after eliminating it, the assignment will be completed.
This will be the last geth outpost. After clearing it you'll be able to go to Socrum where the main base is situated.