Before you start
Sever the Hedron Links opens the moment you finish main mission 9, The Hedron Link. Its first marker sends you back to the Oldest House in Downtown, not straight into the Unknown.
- 1. Take the elevator on the floor above Pope and choose Roof Access.
- 2. Activate the Oldest House Rooftop fast travel door on your left so you can skip the elevator next time.
- 3. Step into the Unknown. The quest log now asks you to progress Pope’s Research.
Lost on the way in? Our Unknown zone guide covers the first trip and every route back.
Reaching the link islands
The Hedron Links sit on outer islands you cannot reach yet. Pope’s Research is what connects them (PowerPyx):
- Find a balloon, cut it down to drop a crate, and break the crate for a probe.
- Carry the probe to the red circle near that balloon. The minimap shows the spot and the probe beeps as you get close.
- Place the probes in order. Each one raises a Gravity Well that throws you to the next island.
- Each island has one research site; the central island has two.
Finishing all of Pope’s Research also gives the Resonant Token, which adds a second combat ability slot. That is worth having before the two link fights.
Hedron Factor: Evac Building link
On the south island, follow the platforms toward the island with the link and jump across. Interact with the TV to sever it and the fight starts.
- It summons one heavy enemy at a time. Put the boss aside and kill the heavy first.
- When its health reaches the blue marker, a wave of smaller enemies spawns. Clear them before the next heavy arrives.
- It drops mines on the ground at intervals. Keep moving and do not finish combos standing on them.
Hedron Proxy: Field Office link
On the northeast island, climb the platforms up to the link island, jump across and interact with the TV.
- Its body is made of brick-like heavy enemies that break off and charge you. Dodge the charge, then punish the recovery.
- Once only a few heavies are left, groups of small enemies spawn on the ground. Keep one eye on them while you track the big ones.
Near the Field Office you also pass the route to the Co-Director, the Unknown’s Resonant. It is optional for this mission; see all bosses.
Rewards and what comes next
| Reward | Details |
|---|---|
| Living Shard | One, on completion |
| Trophy | Stop it At the Source (Bronze) |
| Next main mission | Rebuild, a Retro Flashback sequence |
Rebuild switches the game into a pixel-art mini RPG. Our Rebuild walkthrough covers the letter puzzle and every memory shard, and the mission list shows where you are in the story.
Sever the Hedron Links FAQ
Where do you start Sever the Hedron Links? It starts as soon as The Hedron Link ends. Go back to the Oldest House in Downtown, take the elevator on the floor above Pope and pick Roof Access to reach the Unknown.
Do you have to finish Pope’s Research first? You have to progress it. PowerPyx lists it as the objective that unlocks the islands with the two Hedron Links: each probe you place opens a Gravity Well to the next island.
Which Hedron Link should you do first? Either. PowerPyx says the mission completes once both bosses are down, in any order. The Evac Building link is on the south island and the Field Office link is to the northeast.
What do you get for Sever the Hedron Links? One Living Shard and the Bronze trophy Stop it At the Source. The next main mission is Rebuild.




