Abandoned Factory Prologue

Note: The majority of chapters for both 9S and 2B's campaigns will overlap, and because of this I will only write a separate page for 9S if a chapter is either significantly or completely different from 2B's. So if you need help with an overlap chapter on your second playthrough, please refer to 2B's walkthrough for the full guide.

This prologue chapter starts with you controlling an adorable little machine lifeform. He wants his brother to start moving again so he figures giving him some oil will help. Tap X to start hopping to the opposite end of the area and grab a container, then head to the gushing pipe to fill it. Slowly walk back to his brother; hopping causes the little guy to trip and drop the bucket. The camera then shifts to 9S who passes time by observing machine behavior. Once the mission starts, turn around to collect a Large Recovery from the item box at the end of the catwalk before jumping off the ladder on the side to find your flight unit below.

You will unlock Ending G by leaping off the edge of the crane to the right by the way. What follows when you enter the tunnel with the flight unit is a rather long sequence of shoot-em-up and hacking. You need to hack four security towers each of which are defended by a group of enemies. Defeat them first before initiating a hack. To start a hacking sequence, hold the specified button until the small meter fills completely, after which you must destroy the black orb within the given time limit to successfully complete the minigame. 9S will take damage each time a hacking attempt fails.

Hacking can also be used to destroy or heavily damage enemies. There are times that you can actually choose what to do with the machine after a successful hack. You can destroy the target right away, turn it into a temporary ally, or take control of it yourself. However unlike 2B, 9S can only equip one weapon instead of two, but his hacking abilities more than makes up for it. Anyway, you'll be mostly be stuck patrolling tunnels and shooting things until 2B actually engages the Engels Goliath in its entirety.

At this point you are responsible for hacking four sections of the goliath, starting with the head, followed by both arms then back to the head again. Only the last one is a bit complicated and the layout of the stage changes each time you fail. 9S will temporarily go offline after this bit and you'll have to reactivate his visual and vocal systems to continue.

All you need to do after that is defeat more enemies with the pod and complete a few simple hacks. 2B will take care of the rest and the chapter completes with the both of them detonating their black boxes to destroy the Goliath.