This Galaxy Aint Big Enough...

In the Observation Deck, activate the “Switch” to return to normal pressure. Proceed north, loot two containers, and activate the “Control” to bring the Teleportation Matrix online.

After Sally opens the door west, enter the room with the observation window. An alien hologram will appear, and aliens will shoot a Death Ray. Somah will give you the mission to deactivate the alien Death Ray.

Continue west to a deactivated Teleportation Matrix. Activate it to proceed deeper into the ship.

Head west to the Weapons Lab area. Turn south, and kill the Guardian Drone and Alien that appear in the teleporter rooms to the north. Loot containers and shelves. Activate the “Control” to deal with a nearby Turret.

Head west into a tunnel. Activate the “Control” on the wall near the door to the north to access a room containing a dormant Guardian Drone, a container, Epoxy, Alien Biogel, Alien Power Modules, Alien Power Cells, a Buttercup Toy, an Alien Atomizer, and the unique Atomic Pulverizer.

Head back to the hallway and continue west, then north to a T-shaped intersection. Follow the tunnel north, then east, up stairs, and south. At the split, head east to a room with an Alien, a Healing Arch, and a “Control” that drops a force door, granting easy access back to the start of the level.

Go down stairs south, kill enemies, and loot containers. Continue east through a doorway, then south through a tunnel to a large room. Go up stairs east to the upper level, kill two Aliens, and head through a doorway south and down a tunnel. Loot containers on both levels.

In the Weapons Lab, activate the three “Controls” on the western wall. The one near the door opens it. The other two activate an “Experimental Weapons Drone” and summon Brahmin for it to shoot. After the display, deactivate the Drones and kill them to obtain their unique Drone Cannon Ex-B.

Explore the eastern half of the lab. Activate a “Control” to get Alien Captive Recorded Log #24. Loot shelves to the south containing Alien Power Cells, an Alien Atomizer, Frag Mines, Combat Armor, Tesla Armor, Alien Epoxy, Plasma Mines, Plasma Grenades, Alien Biogel, Pulse Mines, Pulse Grenades, a Gatling Laser, Large Alien Crystals, two more Alien Atomizers, Microfusion Cells, Energy Cells, a Plasma Rifle, a Plasma Pistol, and Metal Armor.

Head through a doorway north to find a firing range. Grab the unique Alien Disintegrator, the Destabilizer, from a shelf and loot the container north.

Activate the two “Controls” at the firing range. The southern one warps in Brahmin, and the Teleportation Matrix takes you to them. Activate the northern “Control” to warp in Raiders and a high-powered enemy. Let them fight, and after enough have died, press the button again to eventually earn the Xenotech Expert perk.