Abandoned Factory Endgame

Perform a self-hack and complete all the system checks so you can start snooping around the YoRHa servers. Go around and look for the usual glowing white tiles to check. Making it passed security will give you an archive entry. Examine a couple of them and a new port will open. Head over there and hack in so you get the last archive entry from the server. Back at the Bunker, head for the Terminal elevator after receiving the distress call from 2B. Use the device in there to hack into one of the machines at the abandoned factory.

You will now be controlling a level 1 machine lifeform which must be replaced with something else before going any further. However, most of the machine lifeforms here are ill-equipped to handle any kind of direct combat. So hack into the enemies instead unless you can take control of one of the bigger machines. I'm not sure if equipping 9S with Hack Boost chips before coming in here would help, but you can go ahead and try that.

It is worth noting that you won't actually lose if the machine you are controlling is destroyed. You will just revert back to that old rusty level 1 thing you started with. That said, head for the door and take over one of the purple machines nearby. Carefully make it through the pressing machine as the smoke makes it somewhat difficult to see. The exit to the tower structure of sorts at the other end is at the bottom-left corner.

In the next room, hack into the axe-wielding machine if you like before stepping onto the conveyor belt. At the bottom of the stairs is an enemy you can hack to destroy before moving on. Once you reach the next pressing machine section, it's best to take control of one of the floating enemies so you can proceed quickly. It also helps to repair the dead bodies of other players if you're online, or even subjugate other machines so you can at least have allies.

Keep going until you come across a non-hostile Biped machine. Make sure you take control of it as doing so makes the next section way easier. Continue forward until you reach the room with the elevator currently carrying 2B and Pascal. Hack it to complete this section of the level. Moving on to the hacking space where you must open multiple gates so your friends can keep moving through the factory. After hacking the first gate, follow the path to the right and activate the node at the end to pick up an archive (Project Gestalt Report 1).

Go unlock the second gate then head left. You'll find two more archive entries (Project Gestalt Reports 2 and 3), by seeking out more nodes to activate around this area. Now to shutdown the power grid. This one has multiple cores and the highly aggressive security system can make for a chaotic encounter. Fortunately, you get continue exactly where you left off immediately after failing. So there's no real consequence to it.

Once you return to the Bunker, return to the dormitory floor to have a word with the commander. She hands over another archive entry without much fuss. Go grab a flight unit at the hangar and rendezvous with 2B at the city ruins.