Before you can get the Golden Gun, you have to find an audio recording. Once you reach the "Arboretum" area of the ship, locate the deep storage grav shift. Look for a sign with an arrow pointing left to an area called "Looking Glass". Proceed left to find the "Looking Glass Scene Selector" screen. Smash the screen, then climb up the small shaft using your Gloo Cannon. Next to Alex's house is a body with the Golden Gun audio recording that gives you access to Jada Marks' safe in the Crew Quarters. You can then follow the side quest marker directly to her safe and collect the Golden Gun.
Getting the Nullwave Transmitter
When you enter Life Support through the Cargo Bay, go straight ahead into the Atmosphere Control Room. Proceed to the back right corner and look for a maintenance shaft. Use the Gloo Cannon to get into the Oxygen Flow Control Room. Look at the note to get the storage room code. Return to the room you started in, and use the grav shaft past the electric floor. A Nightmare is probably already waiting for you downstairs. The storage room is just right from the grav shaft. Inside is the Nullwave Transmitter fabrication plan in a closet. The Nullwave Transmitter disables Nightmares and prevents them from launching its heavy attacks.
Getting the Q-Beam Laser weapon
To get the Q-Beam Laser weapon, go to the Hardware Labs and enter the machine shop. Go outside the ship and find the breached section to the right. Locate the Breach Failsafe and fix it (Repair Level 2 required). After the breach is fixed, go back inside and enter the breached section through the Atrium second floor. Use the computer to open the door to the testing range, and grab the Q-Beam Laser weapon. It shoots a concentrated beam of particles and lets the target explode. To get the fabrication plan for the Q-Beam ammo, halfway through the story you will automatically reach the Deep Storage. Once you are inside, use the note on the computer on the right to get up the stairway in the next room and up to the data vaults. Turn right and enter the command center. In the top right corner is a safe with the Q-Beam Cells fabrication plan. The code can be found on a note pinned behind Danielle Sho's computer screen.
Getting the shotgun
Before you can get the shotgun, you need to get the keycard for the Security Office. It is located in I.T. Security on the first floor. You can get into the room with a Level 1 hack. Prepare for a fight and grab the keycard on the left. Return to the ground floor of the Lobby and go into the Security Station, located next to the stairs. The shotgun is sitting on the table. There is a book next to it with a hint for the safe where you can find the fabrication plan for the shotgun shells.
Infinite Materials
Collect some junk/extra weapons and recycle them Collect the materials Place the materials in the recycler, and split them into 4 items (so if you have 2.0 Exotic Material, split it into 4 stacks of .5) Recycle the materials You will receive 2X whatever you put in (so if you put in 2, you will get 4, 10 will get you 20, etc) This works for all 4 materials, works as of V 1.01.
Getting the Golden Gun...