The first weapon upgrade station in the game can be found in Neptune's Bounty, in the Freezer Bottom Floor.


You can find it right before the door to Smuggler's Cave, you'll be facing it when you head down the staircase into this area. You'll run into this station no matter what as you need to head through here to progress.

The 2nd upgrade station will also be found as you progress in the game's story.



The station will be on your left as you go through the tree farm to the Farmer's Market.



The next upgrade station will be in the Farmer's Market, which can only be accessed through Arcadia.



You can find it in the Winery, lower cellar. It's in a pool of water.

The next station is found in the Fort Frolic.



You'll find it in the Le Marquis D'epoque section of the Cocktail Lounge. This place is directly south of the initial bathysphere on the map. You can find it in a library room in a lower area.



The fifth station is a bit tricky. You can find it in the basement of the Sinclair Spirits bar. You can reach this place by heading through the frozen tunnel and walking to the other side of the large room connected to it.



To access the basement, you will have to find a secret button. You can find this button behind the counter.


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This next station is very easy to find. It is right next to the Gatherer's Garden in the Hephaestus Core.




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This station is yet another station that you will stumble upon easily if you are following the objective.



To get into this room, all you need to do is hack the keypad outside the door or you could find the code (0126). The station is in the northeastern corner of the room.


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This station is found in Fontaine's home for the poor, at the top floor.



You'll need to go through Atlas' office. You can see the station on the left when you reach the bottom of the staircase going through the office.



You can find the next station on the back of the pillar in the Mercury Suites.





The next station is located in Sander Cohen's apartment. You can only access this area if you spared him in Fort Frolic.



The blue circle is the entrance to the apartment and the red circle is where the upgrade station is on the upper floor.

The first station in this area is in plain sight when you leave the bathysphere station, next to the body of a rosie.





The last station in the game is found in the Optimized Eugenics area, next to a gene bank.