The majority of side quests in The Outer Worlds are simple. Speak with an NPC, follow the objectives, done. Make sure when you are attempting a specific quest, that it is selected in your journal. You can only track one quest at a time, so you want to ensure you’re chasing the correct markers.
Weapons From The Void Quest Guide
After you have access to the Captains Quarters on the Unreliable, read all of the messages on the terminal inside. This unlocks this side quest. Go to the Crew Quarters on the Groundbreaker, it’s just past Customs and past Security. Once inside, there is a small vent on the wall. Climb through there to the Repair Hangar. Kill the enemies, loot the keycard and go into the nearby room. You’ll find the weapon in a box on the desk.
Once you’re done with that, speak with Gladys on Groundbreaker and select the Trade option. You need to buy the “Hephaestus Mining Archive” item from here to open a new objective for the quest. Then return to your Captains Quarters on the Unreliable and play the cartridge on the terminal. Head to Scylla and grab the weapon there.
Finally, get the weapon from the lab. At this point, you will need to discover more clues. Proceed through the main story until you reach Fallbrook, it’s on Monarch, via the Stellar Bay area.. You need to speak with Duncan and buy the Damaged UDL Datapad and SubLight Datapad, this reveals your next clues. Both weapons are on the planet, just follow the objectives.
The one in the UDL Lab has a really high hacking requirement. If you don’t have the ability to hack it, you can find the key upstairs, on a desk near a monitor.