Farming ARC Motion Cores efficiently comes down to targeting specific activities that spawn them in bulk. Motion Cores are a rare topside material used in crafting and they gate key upgrades: Refiner II (5 cores) and Refiner III (20 cores). Intact Motion Cores count for upgrades and recipes; damaged versions do not.
Best method: farm ARC Probes (including Prospecting Probes event)
Probes are oblong cylindrical pods that touch down during runs. They’re consistent sources of intact ARC Motion Cores and each probe can be looted three times, making them the most time‑efficient farm per encounter.
Step 1: Enter any map and watch the sky for descending probe pods or distant smoke/plumes. If the Prospecting Probes event is active, prioritize that map for more reliable spawns.
Step 2: Approach a landed probe and start the breach on the end cap. The breach is loud, so expect ARC units or players to path toward you.
Step 3: Loot the probe, then interact two more times to pull from its remaining loot pools. Probes offer three separate loot interactions; do all three before leaving.
Step 4: Relocate immediately after looting to avoid third parties attracted by the breach audio. Extract once you have the Motion Cores you need.
High‑yield alternative: open Rocketeer husks during event spawns
Rocketeer husks that appear during their dedicated events can contain Motion Cores. These sites can produce damaged cores frequently and intact cores occasionally.
Step 1: Queue into maps when Rocketeer husk events are active. Move between husk locations as the event progresses.
Step 2: Open the husks and clear their contents. Expect damaged ARC Motion Cores often; intact Motion Cores can appear as a rarer drop.
Step 3: Rotate to the next active site or extract if you’ve met your Motion Core target for the session.
Targeted hunt: kill or chip the Surveyor (rolling ARC with a blue sky beam)
The Surveyor is the large rolling ARC that projects a visible blue beam into the sky. Damaging it causes shell plates to break off that can be looted for materials, including Motion Cores; killing it yields a larger loot dump.
Step 1: Scan the horizon for the tall blue beam shortly after drop‑in. On Dam Battlegrounds it’s straightforward to route toward its spawn area.
Step 2: Engage the Surveyor at range. As plates fall off, safely loot the debris for Motion Cores and other parts.
Step 3: If the Surveyor doesn’t appear (or the beam isn’t visible), it may not have spawned or was already killed. Extract and re‑queue another raid to roll a fresh instance.
General fallback: farm large ARC enemies
Defeating higher‑tier ARC units can drop Motion Cores from their lootable parts. Expect lower consistency than probes and events, but this is a viable pickup while completing other objectives.
Step 1: Route through hotspots where large ARC enemies patrol. Prioritize opportunities to fight when you have cover and escape paths.
Step 2: After the kill, search the wreckage and surrounding debris. Bag any Motion Cores quickly to avoid third parties.
Step 3: Decide whether to continue your run or extract based on inventory pressure and proximity to extractions.
Damaged vs. intact Motion Cores
Only intact ARC Motion Cores count for crafting and station upgrades. Damaged ARC Motion Cores are useful for recycling into ARC Alloy but cannot be used to power or upgrade stations.
Step 1: Check the item name before you stash it. If it’s labeled “Damaged,” plan to recycle it into alloy rather than reserving space for upgrades.
Step 2: Reserve stash space for intact Motion Cores until you have enough for your target upgrade.
How many ARC Motion Cores you need (Refiner upgrades)
Plan your farming around these thresholds to avoid extra risk after you’ve met the requirement.
| Station upgrade | ARC Motion Cores required |
|---|---|
| Refiner II | 5. |
| Refiner III | 20. |
Method comparison at a glance
| Method | Key cues | Notes |
|---|---|---|
| ARC Probes. | Falling rocket‑like pod, smoke plume at landing. | Three loot interactions per probe; fastest reliable Motion Core farm. Breach is loud. |
| Rocketeer husks (event). | Active husk event areas. | Damaged cores are common; intact cores can appear as a rare drop. |
| Surveyor hunt. | Tall blue beam into the sky. | Chip plates for loot mid‑fight or kill it for a larger dump; if no beam, re‑queue. |
| Large ARC kills. | Patrolling high‑tier ARC units. | Lower consistency than probes and events; good opportunistic pickups. |
Focus on probes first—they’re quick, repeatable, and predictable. Once you’ve banked the Motion Cores for your next Refiner level, extract and upgrade to avoid risking unnecessary losses.
