Guides / Essence Reference
Essence Reference
Complete Data Guide
Comprehensive reference for all essence terms, rarity system, enhancement rates, acquisition methods, and system data in Arknights: Endfield.
Essence Terms
Every essence has up to 3 terms (stats/effects). Terms belong to 3 categories: Primary Attributes, Secondary Attributes, and Skills.
Primary Attributes (5)
Secondary Attributes (12)
Rarity System
Essences come in 5 rarity levels. Higher rarity = more term slots and higher max levels.
Enhancement
Enhance essences using Coolant Gel. Success rates vary based on how many terms the essence already has.
0 or 1 Existing Terms — 5 Tiers
| Tier | Dust Cost | Success Rate | New Term Level |
|---|---|---|---|
| 1 | 30 | 60.0% | Lv.2 |
| 2 | 60 | 24.0% | Lv.3 |
| 3 | 120 | 10.9% | Lv.4 |
| 4 | 250 | 5.0% | Lv.5 |
| 5 | 450 | 2.7% | Lv.6 |
Acquisition
Essences can be obtained through multiple methods. Total unique items: 74.
Monster Drops
Defeat enemies in the open world (30 items)
Valley IVTypes: Turbid, Stable, Clean
Wuling RegionTypes: Turbid, Stable, Clean
Severe Energy Alluvium
Spend Sanity to challenge dungeons for Flawless essences
Episode Rewards
Complete Episode missions (9 items total)
Shops & Events
Limited sources for high-rarity essences
- • Event shops (limited availability)
- • Special campaign rewards
- • Login bonuses (occasionally)
Click on Severe Energy Alluvium or Episode Rewards cards above to jump to detailed guides
Severe Energy Alluvium
Spend Sanity to challenge dungeons. Each location has multiple difficulty levels.
In-Game Tip: Finding Compatible Essences
Open Operation Manual → Index → Energy Alluvium → Click the essence symbol (left of View button) to see which weapons can drop compatible essences at each location.
Valley IV
Tundra Region Dungeons
Enemies
Axe Armorbeast
Tunneling Nidwyrm
Acid Originium Slug·α
Acid Originium Slug
Brutal Pincerbeast
Indigenous PincerbeastEssence Pool (8 types)
Enemies
Bonekrusher Arsonist
Bonekrusher Pyromancer
Hazefyre Claw
Hazefyre Tuskbeast
Elite Ripptusk
Bonekrusher Ambusher
Bonekrusher Raider
Bonekrusher RipptuskEssence Pool (8 types)
Enemies
Heavy Sting α
Heavy Ram α
Falsewings α
Sting α
Ram α
Falsewings
Sting
RamEssence Pool (8 types)
Enemies
Bonekrusher Ballista
Bonekrusher Executioner
Bonekrusher Vanguard
Bonekrusher Infiltrator
Elite Ambusher
Elite RaiderHazefyre TuskbeastBonekrusher RipptuskEssence Pool (8 types)
Wuling Region
Eastern Region Dungeons
Enemies
Tidewalker
Prism
Hedron δ
Hedron
Mudflow δ
MudflowEssence Pool (8 types)
Episode Rewards
Complete Episode missions in each region to earn guaranteed Pure (4★) and Flawless (5★) essences.
Valley IV
4 Episodes
Wuling
1 Episode
Note: Each episode rewards one Pure Essence (Rarity 4) and one Flawless Essence (Rarity 5).
Engraving Kits
Engraving Kits reduce RNG during Essence Etching by locking specific term slots. The new Multi-Line Engraving Kit allows complete manual selection of all 3 stats.
Multi-Line Engraving Kit
3-Line Selector — Guaranteed Perfect 3/3 Essence
What It Does
Unlike standard Engraving Permits that lock 1-2 stats, the Multi-Line Kit allows manual customization of all three stat slots on a Flawless (Yellow) essence, guaranteeing a perfect 3/3 result.
- ✓Select one stat from each of the three essence pools
- ✓Perfect alignment with weapon's inherent passives
- ✓100% success rate — no RNG
How to Obtain
Valley IV — Origin Lodespring
- 1.Raise Valley IV Stock Redistribution to Level 4 (~380,000 Valley Stock Bills)
- 2.Purchase [Valley Multi-Line Engraving Kit] from regional store as a "Staple Good"
- 3.Use Valley Stock Bills earned from AIC, Depot deliveries, or market trading
Stat Selection Categories
Sanity Cost Comparison (Target: 3/3 Perfect Essence)
| Method | Success Odds | Avg Sanity | Time Investment |
|---|---|---|---|
| Un-Ticketed Farming | 1/213 (0.47%) | 17,070 | ~83 days |
| Single-Line Permit | 1/24 (4.17%) | 1,920 | ~9 days |
| Multi-Line Kit | 1/1 (100%) | 80 (base) | Immediate |
Best Use Cases
Reserve for Signature/BiS weapons with rare skill requirements (Twilight, Detonate) like Laevatain's sword (Intellect/Attack/Twilight). Future regions like Wuling will receive similar kits as the "Techno-Protocol" narrative advances.
Weapon List
Interactive reference for all 51 weapons from Arknights: Endfield Essence Tools v0.7. Track which essences you own and desire, filter by type/skill/location, and plan your essence farming efficiently.
Essence Farming Tips:
- When you find a matching essence, lock it immediately
- Use the checkboxes to track owned and desired essences
- Your progress is saved automatically in your browser
- Some 5★ weapons perform as well as or better than 6★ alternatives
Etching Strategy:
- Keep essences that match weapons you're building toward
- Use mismatched essences as Etching material
- Consider keeping flexible Universal skill essences
- 5★ weapons are easier to max potentials and can be equally viable
Preset Essences
Pre-made essences from Severe Energy Alluvium dungeons. Each has a specific skill type focus.
Data version: v1.2.0 • Last updated: 2026-03-13
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