Arknights Endfield Alesh Build & Analysis

Alesh is a 5★ Vanguard in Arknights Endfield built around SP recovery, Cryo stack conversion into Solidification, and frequent trigger-based follow-ups. His kit is not “press button for damage.” It is “create the condition, then cash it in for tempo.”

If you are comparing Alesh to other operators or trying to understand where he stands in the broader meta, this article is written to slot directly into our Arknights Endfield Tier List, where all characters are evaluated under the same conditions and assumptions.

Basic Information

Weapon: Sword
Role: Vanguard
Element: Cryo
Rarity: 5★
Main Attribute: Strength
Secondary Attribute: Intellect

Base Stats

Stat	Base	Max
HP	500	5495
ATK	30	309
DEF	0	0
Strength	20	158
Agility	9	95
Intellect	13	125
Will	10	89

Skills

Basic Attack — Basic Rod Casting

Up to 5 attack sequences dealing Physical DMG
Final Strike deals 17 Stagger when Alesh is the controlled operator
Mid-air basic attacks become Dive Attacks, dealing Physical DMG in an area
Attacking a Staggered enemy triggers a Finisher, dealing heavy Physical DMG and restoring SP

Battle Skill — Unconventional Lure

Hooks a block of ice and slams it to deal Physical DMG to the target
When hitting a target with Cryo Infliction, consumes all Cryo stacks, forcibly applies Solidification, and recovers SP based on stacks consumed
This SP recovery effect can only trigger 1 time, even if the skill hits multiple enemies

Combo Skill — Auger Angling

Trigger

When the Arts Reaction or Originium Crystals of a nearby target is consumed

Effect

Opens an angling hole beneath the enemy, dealing Physical DMG and recovering some SP
Has a chance to hook a Rare Fin that greatly increases DMG dealt and recovers additional SP

Ultimate — One Monster Catch!

Deals Cryo DMG in a large area in front and applies Cryo Infliction
Recovers some SP on hit, with additional SP gained for each target defeated

Talents

Flash-frozen for Freshness

Promotion I: After Solidification or Originium Crystals are applied to a nearby enemy, gains 3 Ultimate Energy. If Solidification is applied by Alesh, gains an additional 6 Ultimate Energy. Triggers once every 3s.
Promotion II: Gains 4 Ultimate Energy; if Solidification is applied by Alesh, gains an additional 8 Ultimate Energy. Triggers once every 3s.

Veteran Angler

Promotion II: Auger Angling improved — every 10 Intellect grants Rare Fin catch chance +0.2% (max +30%)
Promotion III: Auger Angling improved — every 10 Intellect grants Rare Fin catch chance +0.5% (max +30%)

Potentials

Potential I: Unconventional Lure improved — SP recovery grants an additional 10 SP
Potential II: Strength +15, Intellect +15
Potential III: Auger Angling improved — catching a Rare Fin grants the entire team ATK +15% for 10s (cannot stack)
Potential IV: One Monster Catch! improved — Ultimate Energy cost −15%
Potential V: One Monster Catch! improved — hitting a target below 50% HP increases the DMG multiplier to 1.5×

Promotions, Materials, and Bonuses

Promotion Materials

Promotion I

Protodisk ×8
Pink Bolete ×3
T-Creds ×1600

Promotion II

Protodisk ×25
Red Bolete ×5
T-Creds ×6500

Promotion III

Protoset ×24
Ruby Bolete ×5
T-Creds ×18000

Promotion IV

Protoset ×36
Metadiastima Photoemission Tube ×20
Bloodcap ×8
T-Creds ×100000

Attribute Bonuses

Promotion I: Strength +10
Promotion II: Strength +15
Promotion III: Strength +15
Promotion IV: Strength +20

AIC Skills

Promotion I: Control Nexus Mood Regen +8%
Promotion II: Reception Room Clue 1 Rate-UP: UWST (does not stack)
Promotion III: Control Nexus Mood Regen +12%
Promotion IV: Reception Room Clue 1 Rate-UP: UWST (does not stack)

Analysis & Verdict

Alesh is built around a very specific loop: apply Cryo, then turn those stacks into Solidification while getting paid in SP for doing it. His Battle Skill is the cleanest example. If the target already has Cryo Infliction, Unconventional Lure consumes all stacks, forces Solidification, and restores SP based on how many stacks you just cashed in. That means the team is not only freezing the enemy — it is accelerating its next rotation at the same time.

The important limiter is written directly into the skill: the SP recovery from this conversion only triggers once, even if the slam hits multiple enemies. In practice, this makes Alesh strongest when your team is committing to one priority target. In messy multi-target rooms, the conversion can still happen, but the “SP payout” doesn’t scale with extra bodies.

Auger Angling is a trigger-based Combo Skill. It activates when the Arts Reaction or Originium Crystals of a nearby target is consumed. When the condition happens, Alesh deals Physical damage, recovers SP, and has a chance to hook a Rare Fin for a bigger spike of damage and more SP. This is why his rotations feel fluid in teams that naturally consume reactions or crystals on schedule — he is constantly getting small injections of tempo without needing to manually force it.

One Monster Catch! extends the same identity into an Ultimate: a forward AoE hit that deals Cryo damage, applies Cryo Infliction, and refunds SP on hit, with extra SP if targets die. This makes it function as both setup and sustain. You use it to seed Cryo across multiple enemies, then you immediately have tools that benefit from those stacks existing.

His talents and potentials reinforce “more casts, more often.” Flash-frozen for Freshness ties Ultimate Energy generation to Solidification and Originium Crystals being applied nearby, with an extra bonus when Alesh is the one applying Solidification. Veteran Angler increases Rare Fin chance based on Intellect, which directly increases how often Auger Angling spikes. Potential I adds a flat extra 10 SP to Unconventional Lure’s recovery, which is a big deal because it pushes the whole team’s cycle forward without needing additional conditions.

Alesh performs best when the team can reliably create Cryo stacks and then control when they are consumed. In those situations, he is not only enabling Solidification — he is making the entire rotation faster. When the team cannot keep Cryo stacks stable on the right target, his biggest payoff moments happen less often, and he becomes “just” a frequent trigger-based Vanguard instead of a conversion engine.

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Alesh Teams