Exor farming: confirmed drops, spawn locations, and kill efficiency
How to farm Exors efficiently in Abiotic Factor — confirmed drop table with percentages, spawn locations across sectors and portal worlds, net vs. melee decision, and how to manage the Exor Monk teleport variant.
Original anomaly protocol
Step 1
Trigger
Step 2
Contain
Step 3
Extract
Step 4
Exit route
This site-generated diagram summarizes the decision flow used by the guide. It is an original planning aid, not copied game or wiki media.
Player Note -- Vex Runner: The Exor drop table has a harvesting mechanic that isn't explained in-game. You kill the Exor, and then you need to harvest the corpse with a sharp weapon to get the full drop. I didn't know this for my first six kills. I was picking up a fraction of the available drops.
Community: Not knowing about the corpse-harvest mechanic is the most common Exor farming efficiency loss on Steam Discussions — most players describe discovering it after already farming multiple sessions without full drops — based on Steam Discussions.
Confirmed Exor drop table
| Item | Drop rate | Quantity |
|---|---|---|
| Raw Exor Heart | 100% | 1 |
| Exor Arm | 100% | 1 |
| Exor Quill | Guaranteed | 3 (minimum) |
| Exor Quill (additional) | 70% | 1-2 extra (maximum 5 total) |
| Raw Alien Drumstick | 50% | 0-1 |
| Bio Scrap | Harvestable | Variable |
Total maximum drop: 1 Raw Exor Heart, 1 Exor Arm, up to 5 Exor Quills, potentially 1 Raw Alien Drumstick, plus Bio Scrap.
The corpse-harvest mechanic
After killing an Exor, the corpse can be harvested with any sharp weapon (Kitchen Knife, Shiv, Makeshift Spear, or similar) to collect remains. The quality of remains depends on the weapon used.
Without harvesting, you only collect items that drop directly on death. The full drop table requires the harvest step.
Workflow:
- Kill the Exor
- Equip a sharp weapon
- Interact with the corpse to harvest
- Collect all drops including Bio Scrap
Exor variants
Standard Exor: Base drop table above. Nets are highly effective — a netted Exor cannot attack and can be killed safely.
Exor Monk: Teleports after laser attacks. Nets prevent the teleport. If you're fighting Exor Monks, carry nets or avoid laser-type weapons. Post-teleport positioning is unpredictable without a net to lock them down.
Armored Exor: Found in Hydroplant. Tougher variant with higher resource requirements to kill. The same drop table applies but with increased difficulty.
Spawn locations by efficiency
| Location | Exor type | Reset frequency | Notes |
|---|---|---|---|
| Mycofields | Standard + Armored | Twice weekly | Fire protection required; multiple spawns |
| Containment Block | Standard | Portal World schedule | Accessible mid-game |
| Various sectors | Standard patrols | Fixed spawn, no reset | Lower density; useful early |
For dedicated farming, Mycofields provides the highest density of Exor spawns per run, but requires full fire protection. See the Mycofields Survival Guide.
Drop priority
If you're farming Exors for a specific item:
- Raw Exor Heart and Exor Arm: 100% drop — one kill per item needed
- Exor Quills: Minimum 3 per kill, up to 5 — efficient to farm in bulk since variance is low
- Raw Alien Drumstick: 50% — plan for 2x kills per drumstick needed on average
Expected yield per farming session
Planning guide for session targets:
| Target item | Expected kills needed | Notes |
|---|---|---|
| 1 Raw Exor Heart | 1 | 100% drop |
| 1 Exor Arm | 1 | 100% drop |
| 5 Exor Quills | 1-2 kills | 3 guaranteed + 70% for 1-2 more |
| 1 Raw Alien Drumstick | ~2 kills average | 50% per kill |
| 10 Exor Quills | 3-4 kills | Plan conservatively |
Farming session setup
Before a dedicated Exor farming run:
- Confirm protection gear for the target portal world (Mycofields requires fire resistance)
- Carry nets if farming Exor Monks — prevents teleport and allows clean kills
- Have a sharp weapon ready for corpse harvesting after each kill
- Know your exit condition: number of target items or supply threshold, whichever comes first
Exor Quills use cases
Exor Quills are among the most useful Exor drops due to the consistent yield. Common uses:
| Use | Priority |
|---|---|
| Anomaly-tier crafting recipes | High — check your current crafting queue |
| Trade with NPCs | Medium — check trader inventories |
| Stockpile for future recipes | Low — only after immediate needs are met |
Farm Exor Quills in bulk when you have the opportunity. The 70% chance for extra drops means variance is manageable — most kills yield 4-5 quills.
Corpse harvesting tool selection
The wiki notes that the quality of remains obtained depends on the weapon used for harvesting. Practical guidance:
| Weapon type | Harvest quality | Recommendation |
|---|---|---|
| Kitchen Knife | Standard | Available early; reliable baseline |
| Shiv | Standard | Craftable early |
| Makeshift Spear | Standard | Works; slightly less convenient |
| Higher-tier sharp weapons | Potentially better | Use your best available sharp weapon |
Keep a dedicated harvesting weapon in your loadout on Exor farming runs. Switching from your combat weapon to a sharp weapon after each kill adds one extra step but ensures you get the full drop table including Bio Scrap.
See Also
Sources & References
Exor drop table (Raw Exor Heart 100%, Exor Arm 100%, Exor Quill 3x guaranteed + 1-2 additional at 70%, Raw Alien Drumstick 50%), Exor Monk teleport behavior, and spawn locations verified against the Exor wiki page.
Editorial contribution
Provides the confirmed Exor drop table with percentages, explains the corpse-harvest mechanic, and compares spawn efficiency across locations.
- abioticfactor.wiki.gg: Exor →
- abioticfactor.wiki.gg: Exor Monk →
- abioticfactor.wiki.gg: Armored Exor →
Sources support factual claims. Route choices, comparisons, and recovery guidance are editorial synthesis and may change with game updates.
Author
Co-op main. Cleared the facility on both normal and lethal difficulty. Mostly plays Engineer. Writes about combat because everyone else gets it wrong.
About our editorial team →