Aphelion: How to Clear Chapters 7 & 8 – Storm and Nexus

Chapters 7 and 8 are where Aphelion hands you its two playstyles back to back, and most stalls happen because players treat them the same way. Chapter 7, The Storm, is Ariane’s stealth-and-traversal run through weather that hides the route. Chapter 8, The Nexus, switches to Thomas for slow, oxygen-managed survival inside a wrecked base. Play each on its own terms and the difficulty spikes flatten out.

The short version

• Chapter 7 (The Storm) is Ariane. Move shelter-to-shelter, use the EM scanner in short bursts from cover, and beat Nemesis with stealth and distraction rather than a foot race.
• Chapter 8 (The Nexus) is Thomas. Oxygen is the timer. Stay on the objective line and avoid optional detours.
• Chapter 8’s real order: winch the debris clear → take the commander’s credentials from Frank’s body → push through the med bay → crawl through more debris → winch the circular object to end the chapter.
• The Chapter 8 winch is a chapter-ending cutscene, not the game’s finale. The true ending is Chapter 11, The Source, where Ariane destroys three pulse machines.

What Chapters 7 and 8 are testing

This is the stretch where Aphelion alternates its two leads. Ariane’s Storm is traversal and stealth, but the weather turns navigation itself into the hazard. Thomas’s Nexus is methodical survival, with the pressure coming from limited oxygen and blocked corridors rather than enemies. The late-game mistake is improvising. Both chapters reward committing to one clean route at a time. If you played the earlier chapters, you already know the pattern from the Chapter 1 and 2 walkthrough and the Chapter 3 and 4 walkthrough; Chapters 7 and 8 just raise the stakes on each side.

Chapter 7 walkthrough: The Storm (Ariane)

Chapter 7 puts you back in control of Ariane for a stealth-and-traversal run through the storm. The weather is the threat, so the correct rhythm is simple: pick the next safe point, commit to it, recover, then plan the next leg. If visibility drops and you cannot tell whether the next ledge is reachable, wait in cover rather than guessing.

Move in short bursts between shelter points

Treat shelter pockets as your checkpoints. Before leaving one, face the next ledge or anchor and confirm exactly where you are headed. If you step out and immediately start correcting course, you burn the longest possible exposure window. Commit to one destination at a time, even when it feels slower. When the chapter feels unfair it is usually because you are running, scanning, and route-finding at once. Scan from cover, pick the next segment, then move.

How to use the EM scanner without getting punished

The EM scanner drives Chapter 7’s frequency-based puzzles, and it is also the easiest way to stall. The scanner confirms direction and interactable targets, but standing in the open to perfect a signal is the wrong play. Use it briefly from relative safety, confirm the direction, then move to the next piece of cover before checking again. If you are not getting a clear result, do not force the scan in a bad spot. Re-center the camera, step back into shelter, and try once more. You only need enough information to advance one segment.

Ledges, winch points, and traversal rhythm

Chapter 7 mixes storm navigation with climbing-style traversal, so a missed ledge or interact point can reset your read of the route. When you reach a winch point or climbing lane, stabilize the camera before committing. If the prompt feels awkward or Ariane does not align cleanly, step back and approach again rather than forcing it while the storm blasts the screen. Treat the winch as a path-enabler: if a section looks like it should open progress but nothing happens, check whether you skipped the nearby anchor or approached from the wrong side.

How to handle Nemesis in The Storm

Nemesis is the panic point of Chapter 7, but this is stealth and space control, not a chase. Ariane handles Nemesis with distraction and broken line of sight rather than direct confrontation. Your goal is not to outrun it in a straight line; it is to open one safe lane, break line of sight, and keep moving.

When the game gives you a distraction, use it to pull Nemesis off the route you need, then move immediately while the path is clear. Do not linger to confirm the distraction fully worked, and do not sprint into open ground right after using one. Create space, cross the choke point, get back into cover.

Chapter 8 walkthrough: The Nexus (Thomas)

Chapter 8 switches to Thomas for oxygen-managed survival inside the damaged base. Where Ariane fights terrain and visibility, Thomas fights a shrinking air supply and blocked paths. This side is slower, investigative survival, and that is exactly how to play it. Rush, and oxygen becomes the punishment for every wrong read.

First priority: oxygen management

Oxygen is the chapter’s timer, so keep your route through the base as direct as possible. Before opening side doors or checking optional-looking rooms, ask whether the current objective needs it. If not, keep moving. The common oxygen death is not one dramatic failure; it is three or four tiny detours that each looked harmless.

• Do the main objective first; only search side spaces if the route clearly demands it.
• Avoid doubling back unless you know exactly what you missed.
• If a locked path stops you, think “required pickup” before “hidden route.”
• Use every oxygen-safe moment to plan the next room, not just the next door.

The exact Chapter 8 objective order

Chapter 8 is an objective corridor, not an open puzzle box, and the order is specific. First, use the winch to pull away the debris blocking the path. With the way clear, interact with Frank’s body to take the commander’s credentials. Push forward through the med bay, then crawl through another section of debris. Finally, use the winch on a circular object to trigger the cutscene that ends the chapter. If your progress stalls, you missed one of those steps in sequence, not a clever bypass hidden elsewhere in the base.

The Chapter 8 winch ends the chapter — it is not the finale

Read the final winch correctly: interacting with the circular object triggers a cutscene that ends Chapter 8. It is not the climax of the game, and there is no boss to stand and fight here. The story continues through Chapter 9 (Reunion) and Chapter 10 (The Styx). Aphelion‘s actual finale is Chapter 11, The Source, where Ariane disables three pulse machines surrounding the Source hub to trigger the closing cutscene and credits. So if the end of Chapter 8 feels anticlimactic, that is by design — you are clearing a path, not winning the war.

Common mistakes that cause the most retries

• Using the EM scanner too long in the open: confirm direction, then move. Do not finish the whole puzzle from one exposed spot.
• Ignoring shelter rhythm in The Storm: fast movement only helps once you know your next safe stop.
• Treating Nemesis like a chase enemy: Chapter 7’s encounters are distraction and route control.
• Forcing winch prompts from the wrong angle: re-approach interact points if the camera or character position looks off.
• Backtracking casually in The Nexus: oxygen loss adds up faster than most players expect.
• Doing the Chapter 8 objectives out of order: winch the debris first, then take the credentials — not the reverse.
• Expecting the game to end at the Chapter 8 winch: that is a chapter break; the finale is Chapter 11, The Source.

Practical takeaway

Play Chapter 7 as Ariane’s careful stealth run: move shelter to shelter, scan in short bursts from cover, and slip past Nemesis with distraction instead of speed. Play Chapter 8 as Thomas’s oxygen race: stay on the objective line, winch the debris, grab the credentials from Frank, clear the med bay and the next debris, then winch the circular object to close the chapter. Treat that final winch as a chapter break, not the ending, and you will head into Chapter 9 with oxygen and patience to spare.