While once again exploring Rapture, players must use weapons to dispatch splicers and other enemies. This time around, there are 14 upgrade stations which can vastly improve the effectiveness of each weapon. Used with the DNA-changing abilities of plasmids, Subject Delta can break through whatever obstacles block his path during the plot. However, the six weapons now have three upgrades each so players must choose which of Subject Delta’s weapons to max while leaving the others at a lower power level. Furthermore, if early upgrade stations aren’t used, Subject Delta will be unable to backtrack to them later so this guide will cover all locations.

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Ryan Amusements

The first upgrade station in-game can be found while grabbing a park ticket, directly across from the window with the Machine Gun.

Inside the Journey to the Surface ride, walk past the family watching TV display and through the door where the second station is waiting.

Pauper’s Drop

The third station is located inside The Hamilton, on the 2nd floor past an El Ammo Bandito vending machine down the hall.

In The Limbo Room club, check behind the stage and inside one of the side rooms to find the fourth upgrade station.

While proceeding through The Sinclaire Deluxe hotel, head through a hallway with a turret near the vent shrine to find a room with the station.

Siren Alley

The sixth upgrade station is inside a locked downstairs room of The Mermaid Lounge. Players need to go upstairs and drop through a hole to gain access to the room and station.

Inside Sofia Lamb’s Office, the seventh station is located on a wall along with a nearby audio diary that has some political themes.

Dionysus Park

At the Basement Storage, there is a Cohen’s Collection room which can only be unlocked with a combination from a nearby audio diary: 1080. The eighth upgrade station is right behind the door.

The ninth upgrade station is tucked in a room with a safe and Health station while heading to the Train Station.

Fontaine Futuristics

After dealing with the BioShock villain Alex the Great and disabling 4 security relays, the tenth station is inside the locked Security Room.

Subject Delta needs to hack open a locked door in the Adam Research Laboratory via a broken window to gain access to the room and the eleventh upgrade station.

Outer Persephone

As players proceed into Persephone near the story’s end, the twelfth upgrade station is to the left on the path to the Examination Rooms.

Inner Persephone

In the Holding wing where Sinclair is imprisoned, the penultimate upgrade station is on the left-hand side.

The final upgrade station is inside the Quarantine Area of the Infirmary after the room with a RPG turret. Hitting the switch to unlock the door will also spawn two Alpha Big Daddies that players must deal with before using the station.

BioShock is available on PC, Xbox 360, Xbox One, PS3, and PS4.

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Source: GamesRadar