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Exocraft Guide: The Minotaur this questline upgrades.

Quick Answer

Trace of Metal is a multi-part questline added in the Sentinel update. It follows a Sentinel that has broken away from the hive mind and started thinking for itself.
Its practical payoff is Minotaur exocraft technology, including the upgrades that turn the mech into a self-piloting, hazard-proof escort.
It unlocks after enough main story and Sentinel-related progress. Pick it up from your mission log, or expect it to surface while you are on a planet with heavy Sentinel activity.
Stages are separated by real-time waits. If the quest looks stuck, it is usually waiting on a timer rather than broken.
Build the Minotaur Geobay before you start, so the rewards are usable the moment you earn them.

Overview

Most No Man's Sky questlines hand you a blueprint at the end and let the story ride along behind it. Trace of Metal does the reverse. The rewards are useful, but the reason people remember it is the subject: a single Sentinel drone that stops obeying the swarm and begins asking questions it was never built to ask. It is the game's clearest look at what the Sentinels actually are, told from inside the machine rather than from the barrel of your Boltcaster.

The questline arrived with the Sentinel update, the same patch that overhauled Sentinel combat, added the Hardframe battle mech, and made Sentinel encounters escalate through waves instead of ending after a few drones. Trace of Metal is the story attached to that combat rework, and the Minotaur technology it grants is meant to be used in exactly those fights.

What It Is

Trace of Metal is delivered in stages rather than as one continuous mission. You complete a chunk, the log tells you to stand by, and a later stage becomes available after a gap. Those gaps are measured in real time, not in warps or in-game hours, which is why so many players assume the quest has bugged out on them. It has not. It is paced deliberately, the same way the Settlement and expedition-adjacent content spreads itself across multiple sessions.

The through-line is a Sentinel that has become self-aware. Rather than fighting it, you end up investigating it, following what it leaves behind, and eventually dealing with the consequences of a machine acting on its own judgment. The dialogue is worth reading rather than skipping. If you enjoyed the machine-consciousness angle in the Autophage questline, this is the earlier, shorter treatment of the same theme.

Exact mission names and step text have shifted across patches. Trust the wording in your in-game log over any external walkthrough, including this one.

Why Do It

The Minotaur is the reason. Out of the box it is a slow, heavy mech that many players build once and never summon again. The technology this questline feeds it is what changes that assessment:

AI pilot capability. The Minotaur can pilot itself and follow you on foot, working as a mobile turret and a second inventory while you mine, scan, or fight. In a Sentinel wave fight, deploying it before the alert escalates gives you covering fire that draws aggro off you.
Hazard protection and life support. The Minotaur runs its own environmental systems, so extreme heat, cold, toxicity, and radiation stop mattering. That makes it the vehicle for storm farming and for extended stays on worlds where your Exosuit would be bleeding protection the whole time.

Beyond the hardware, you get story content and cosmetic rewards. Related to the same update, destroying a Hardframe battle mech drops a Hardframe Engine, which is used to craft Hardframe Legs for the Minotaur. That is a separate drop from the questline itself, but it belongs to the same content bundle and is worth knowing about while you are already fighting Sentinels.

The precise list of blueprints granted at each stage has been adjusted since launch. Read the reward panel as each stage closes instead of planning around a fixed list.

How It Starts

There is no vendor to visit and no item to buy. The questline becomes available once you have made enough progress on the main story and on Sentinel-related content, at which point it either appears in your mission log for you to select manually, or triggers on its own while you are on a planet with active Sentinels.

Two practical notes on this. First, if it is not showing up, the fix is almost always more general progression rather than a specific missing step. Second, if you have several questlines queued, No Man's Sky will only push one at a time. Open the log, set Trace of Metal as your active mission, and the waypoints will start pointing you where you need to go.

The safest advice we can give on the trigger is to check the mission log directly. Prerequisites for this questline have been loosened and tightened across patches, and the log is the only source that reflects your save's actual state.

The Shape of It

Expect several missions in sequence rather than a single objective chain. Across them you will do a mix of:

Sentinel combat. Waves escalate, and later waves bring in walkers and Hardframes. Read the Sentinels combat guide before you commit to a fight you cannot leave.
Signal tracking on planets. Scanning for a source, following a waypoint across terrain, and interacting with what you find. Ordinary planetary legwork, nothing puzzle-like.
Interacting with the awakened Sentinel. Dialogue and choices, delivered in pieces over the course of the questline.
Waiting. Real-time gaps sit between several of the stages. Go do something else and come back.

Stage	What you do	What you get
Opening	Pick the mission up from the log or have it trigger planetside, then follow the first waypoint	The questline becomes active and the first Minotaur-related unlock
Investigation	Track signals across a planet surface and interact with what the Sentinel has left behind	Story progression and further Minotaur technology
Escalation	Survive Sentinel encounters that ramp through waves while you continue the trail	Combat-relevant Minotaur upgrades
Contact	Interact directly with the self-aware Sentinel through the staged dialogue	The core story beats of the questline
Conclusion	Close out the final stage after the last real-time gap	Remaining Minotaur blueprints and cosmetic rewards

Treat that table as the shape of the questline, not a step list. Stage boundaries and the specific unlock attached to each one have moved between patches, so let your log tell you what is next.

Practical Advice

Build the Minotaur Geobay first. The Minotaur uses its own dedicated Geobay, separate from the standard Exocraft line, and the blueprint comes from the Exocraft Technology Merchant on the Space Anomaly for Nanites. If you finish a stage with no mech to install the technology into, the reward sits in your log doing nothing.

Bring real combat gear. Sentinel encounters are part of the questline, and post-update Sentinel waves are genuinely dangerous if you show up with a starter Boltcaster and no shield upgrades. A worked-up multi-tool, decent Exosuit shielding, and a plan for breaking line of sight cover it. The combat guide hub has the fundamentals.

Do not confuse this with Dissonant content. Corrupted Sentinels, Dissonance Resonators, and Echo Locators belong to Dissonant and Corrupted planets and the Autophage chain. They are a different update and a different reward set. Trace of Metal concerns the standard Sentinel hive and the Minotaur.

Let it breathe. Because stages are gated by real time, the questline suits being run alongside other goals. Set it active, play normally, and check the log when a new stage opens.

FAQ

How do I start Trace of Metal?

It unlocks after sufficient main story and Sentinel-related progress. Once available, you select it from your mission log, or it triggers while you are on a planet with Sentinel activity. Because the exact prerequisites have changed across patches, confirm your status in the mission log rather than assuming a specific gate.

What does it reward?

Minotaur exocraft technology, most importantly the upgrades covering AI pilot behaviour and the mech's own hazard protection, plus story content and cosmetic rewards. The exact blueprint list has been adjusted over time, so read the reward panel as each stage completes.

Is it worth doing?

Yes, if you intend to use the Minotaur at all. The upgrades are what make it more than a novelty, and they pair directly with the harsher Sentinel fights the same update introduced. If you never summon exocraft, the draw is the story rather than the gear.

Why can I not continue it?

Almost always a real-time gap between stages. The questline is designed to pause. Check that Trace of Metal is your selected mission in the log, since only one mission pushes waypoints at a time, then come back after a break. Genuine progression blocks are rare compared to timers and unselected missions.

Do I need the Minotaur before I start?

Not to begin, but you want it before you finish. Buy the dedicated Minotaur Geobay blueprint from the Exocraft Technology Merchant on the Space Anomaly and build it at a base so the technology has somewhere to go.

Key Takeaways

Trace of Metal is a staged questline from the Sentinel update, following a Sentinel that has broken from the hive and become self-aware.
Its practical value is Minotaur technology, above all the AI pilot behaviour and the mech's self-contained hazard protection.
Availability depends on main story and Sentinel-related progress. The mission log is the only reliable check for your save.
Real-time gaps separate stages. A stalled quest is usually a timer, not a bug, so verify it is your active mission and return later.
Build the Minotaur Geobay early and bring combat-ready gear, because Sentinel fights are part of the questline and the mech is the point of the rewards.
Mission names, triggers, and reward lists have shifted across patches. Follow the in-game log over any fixed walkthrough.

No Man's Sky Trace of Metal Questline: Minotaur Upgrades & Sentinel Story