Dead Space walkthrough Chapter 4: Obliteration Imminent

Our Dead Space walkthrough guides you through Chapter 4: Obliteration Imminent

Guide by Hayden Hefford Former Guides Writer

Updated on Feb. 7, 2023

Looking for a Dead Space remake walkthrough? You're now on Chapter 4: Obliteration Imminent of our Dead Space remake walkthrough! This section takes you on a trip into the various Administration Services, as you need to divert power to the ADS cannons. This will ensure that the USG Ishimura is able to destroy any incoming asteroids, which are threatening to destroy the ship. There are some tough fights ahead, but we're here help you through every step.

In this section of our Dead Space remake walkthrough, we'll guide you through Chapter 4: Obliteration Imminent, helping you find any Power Nodes, Text and Audio Logs, and Security Clearance doors while completing the main quest.

You can navigate this Dead Space walkthrough using the pages below:

Dead Space walkthrough Chapter 4: Obliteration Imminent

As you progress onto Chapter 4, board the tram and ride it to the Bridge. Finish talking to Hammond and Daniels on the radio, and then proceed to the Main Atrium of the Bridge. On the way, you’ll find a door that requires Security Clearance level 2, which you’ll be able to enter soon. Note its location, and then simply cross the chamber and use the elevator to reach Hammond.

After a brief chat with Hammond, you'll get a Security upgrade to level 2. Once this conversation is over, head back up to the Atrium and walk towards the Security Room door. As you approach, a large Necromorph will burst through the door and attack, throwing you into your first boss fight of the Dead Space remake.

Dead Space image showing Isaac using a Flamethrower to burn a large Necromorph in the Atrium.

How to kill the Atrium boss and get the Contact Beam

To kill this Necromorph, you must use Stasis to slow it down. When it's slowed, run behind and fire your weapon at the growth on its back. It takes a while to kill, but simply repeating this process a few times should help you get out alive. When the fight is over, head into the Security Room and use the terminal to activate the Atrium elevators. Once inside, you'll also find a Video Log in some rubble.

Head back into the Atrium and take the elevator up to Floor 2 of the Administration area. Head through the nearby door and quickly dart through the vacuum corridor, heading into the storage room on the other side to grab a Power Node. Then, go back into the corridor and continue through the next door, turning right immediately to access the Records Office. Inside, you’ll find the new Contact Beam weapon.

Dead Space image showing Isaac loading his new Contact Beam.

How to power the ADS Cannons

After grabbing the Contact Beam, head into the Mining Administration room and kill any Necromorphs inside. Immediately turn left at the entrance to find a door that requires Security Clearance 2, within which you can destroy a purple fuse.

This opens a door on the opposite side of the room, which leads to a small office where you’ll find a Text Log and a Power Node. Grab them both, and then continue through the Mining Administration room and use the circuit breaker to shift power to the ADS Cannons.

With that objective complete, you must now head back to the Atrium elevator and go to Floor 3. This takes you to the Electrical Systems, within which you’ll quickly find a Break Room off to the side. Go in to find a Text Log, and then continue to the main Electrical Systems room, which seems like a large server farm. The floor is split into tiles, some of which are occasionally covered in electricity surges, so watch your step as you continue. Fortunately, any Necromorphs that step on electrified tiles will also take damage.

Dead Space image showing Isaac looking at a Text Log.

As you continue through, another large Necromorph similar to the one you fought in the Atrium will charge towards you. You need to use the same method to kill it, hitting it with a Stasis blast before targeting the weak points on its back.

Kill the Necromorph, and then continue to the end of the room to find some very wobbly cables. They jolt around rather erratically, and will absolutely obliterate Isaac upon making content. Fortunately, you can hit them with a Stasis blast to make this area safe, and then use the nearby circuit breaker to shift power to the ADS cannons, disabling the nearby cables in the process.

Dead Space image showing Isaac looking at some sparking electrical cables.

That’s two systems down, one more to go. Head back to the elevator and return to the Main Atrium. Then, exit the main elevator and look around the other side to find yet another lift. This one takes you to the Water Purification systems, so go inside and head up.

When you exit, take note of the odd man who darts into the corridor up ahead, and then turn left to grab an Audio Log. There’s also a door here that requires Master Security Access which you don’t currently have, so note its location and start following the man you saw a moment ago. Kill the nearby Necromorphs and use the circuit breaker up ahead to divert power to the ADS cannons.

How to calibrate the ADS Cannons

After a brief chat with Hammond, you’ll need to take the door labelled Exterior Access. Head through and stop in the EVA Prep room to find an Intermediate Engineer Rig Schematic, before taking the cargo lift ahead. When you arrive, step out and grab the nearby Audio Log from the message terminal. Then, when you’re ready, head outside to do your first space walk of the Dead Space remake.

While outside, you need to use the three ADS terminals to gain control of each cannon, and then calibrate them by destroying asteroids. It’s a fairly simple minigame, but make sure to kill any baby Necromorphs along the way. They can quickly overwhelm you if you don’t pay attention. After completing the final cannon, fly past it to find White’s RIG (it should be easy to spot thanks to the purple light), and then head back inside.

Dead Space image showing Isaac floating in space, staring at an item called White's RIG.

While making your way back to the Atrium, you’ll see a live recording of Nicole in Medical. Your new objective tasks you with backtracking to find her, so head all the way back to the Bridge Tram Station. Hop on the tram and ride it to Medical. As you disembark, you will complete Chapter 4: Obliteration Imminent.

For help with Chapter 5: Lethal Devotion, check out the next page of our Dead Space remake walkthrough.