ZeroSpace.gg

KD's Comprehensive Co-op Vynthra Guide

Roster

Roster

Broodwomb

  • Requires a Nourishment Pod and Biomass

  • When utilizing Broodwomb units, construct 5–9 Broodwombs

  • Stinger and Lasher upgrades are researched at the Young Canopy; Brood Guard upgrades are researched at the Synapse Canopy

Arkanid

Arkanid

Grell Co-Op T0 Army Unit

Small and weak temporary unit spawned by Keeper, Reaver, and Deep Nest.

Author rating: C

  • Living Meatshield that can be spawned by other Grell units

  • Dies automatically after (roughly) 40 seconds

  • Pathethic stats, exists only to soak up damage

  • Can use Frenzy too for some reason

  • Can be charged into enemies to distract & bait AoE attacks

  • Ineffective against armored targets (4 Damage per attack)

  • Clips through units ; Does not Bodyblock

Abilities

FrenzySpell

Lose 25% health and gain +50% attack and +30% movement speed. Requires commander 'Frenzy' level to be unlocked.

View Frenzy in the Library

(No notes.)

Upgrades

No upgrades.

Stinger

Stinger

Grell Co-Op T1 Army Unit

Fast small melee unit.

Author rating: B

  • Swarmy melee unit, spawns in groups of three

  • Cheap and with decent stats

  • Surprisingly cost-effective

  • Very vulnerable to crowd control and AoE effects

  • Ineffective against armored targets (6 Damage per attack)

  • Is small enough to NOT bodyblock other Grell melee units

  • Synergies: Benefits all of Vynthra's more expensive units, increasing their survivability

Abilities

FrenzySpell

Lose 25% health and gain +50% attack and +30% movement speed. Requires commander 'Frenzy' level to be unlocked.

View Frenzy in the Library

(No notes.)

Biomass SubmersionPassive

On friendly biomass gain stealth and +50% attack speed

View Biomass Submersion in the Library

(No notes.)

Dissolving VenomPassive

Attacks deal 6 damage per second and slow move speed by 25%. Lasts for 5 seconds.

View Dissolving Venom in the Library

(No notes.)

Upgrades

Extensor Adaptation

+50% movement speed.

View Extensor Adaptation in the Library

Author rating: A

Exactly what a swarmy unit needs to reach the frontline

Biomass Submersion

+30% attack speed. Gain stealth on friendly Biomass.

View Biomass Submersion in the Library

Author rating: C+

The attack-speed bonus brings a Stinger to 12 DPS.

  • Cloak is auto-removed when attacking

Useful for defense and if you're good with your Biomass spread

Pouncing Reflex

Stingers can jump up and down normal cliffs. Upon landing, gain 50% attack speed for 5 seconds.

View Pouncing Reflex in the Library

Author rating: C-

Sounds cool, is not

  • The rest of your army will lag behind and the Stingers will die alone

  • 5 Seconds is barely enough time to reach the enemy in many cases

  • Can cause issues on large maps where Stingers will path into uncleared enemy bases Can synergize okay with Behemoth-focused builds

Dissolving Acid

Attacks deal 8 damage per second and slow movement speed by 25% for 5 seconds.

View Dissolving Acid in the Library

Author rating: A

Basically one extra Stinger attacking the target ; Slow is irrelevant as enemies do not flee Effect does not stack

  • Damage affected by enemy armor

Brood Guard

Wanted embed

No Library target currently matches coop/commander/vynthra/unit/coop-vynthra-grell-keeper.

Author rating: C

  • Not-so-durable melee unit (250 HP, which is not tanky for co-op)

  • Affordable (125 Hexite; 3 Supply) with okay damage (20 every 1.3 seconds)

  • Outperformed by significantly more cost-effective units

  • Spawns one Arkanid for every 20 damage taken (250 HP maximum)

  • Enemy units do NOT reliably switch targets to kill the Arkanids

  • Arkanid-spawning is worthless when attacked by targets with AoE

  • With double Infusion, T2 Incubator units also spawn Arkanids on every kill, further reducing the Brood Guard's utility

  • Mandragoras can still attack from behind a 1× Infused Brood Guard

  • Reavers can barely attack from beyond a 0× Infused Brood Guard

  • This is not a recommended strategy however, as the extra range this units has reduces bodyblocking issues and permits them to chomp further into the enemy forces. Stingers work better for this task.

  • Synergies: Lasher, Weaver, Harbinger, Behemoth (Anything that needs tanking)

Abilities

Wanted embed

No Library target currently matches coop/commander/vynthra/unit/coop-vynthra-grell-keeper/spell/frenzy.

(No notes.)

Wanted embed

No Library target currently matches coop/commander/vynthra/unit/coop-vynthra-grell-keeper/passive/arkanid-spawn.

  • Enemy units do not reliably switch targets to kill the spawned Arkanids

  • Arkanid spawning is ineffective against attackers with AoE

Upgrades

Exoskeleton Reinforcement

+75 max HP.

View Exoskeleton Reinforcement in the Library

Author rating: B

Good upgrade, not game-changing

Cytokinin Surge

+3 health regeneration

View Cytokinin Surge in the Library

Author rating: D

The regeneration applies out of combat. Cumulative with the boost from Infusion & other sources Does not address the unit's big issues Lifesteal per attack from later levels deprecates the utility of this upgrade

Accelerated Mitosis

Increases spawned Arkanid from 1 to 2.

View Accelerated Mitosis in the Library

Author rating: B

  • Only affects Arkanids spawned by the Brood Guard Okay upgrade, not game-changing

Lasher

Lasher

Grell Co-Op T1 Army Unit

Ranged combat unit.

Author rating: B+

  • Basic Ranged Unit ; Respectable DPS

  • +50% damage against Medium

  • Can target Air

  • Fragile and costs 25 Flux

  • Benefits a lot from Infusion

  • Requires a Young Canopy

  • Synergies: Stinger, Brood Guard, Mandragora, Reaver

Abilities

CamouflageSpell

Grants invisibility and +75% movement speed for 6s

View Camouflage in the Library

(No notes.)

FrenzySpell

Lose 25% health and gain +50% attack and +30% movement speed. Requires commander 'Frenzy' level to be unlocked.

View Frenzy in the Library

(No notes.)

Upgrades

Caustic Spines

+4 attack range.

View Caustic Spines in the Library

Author rating: S

Very useful, exactly what the Lasher needs

Sinuous Musculature

+50% movement speed.

View Sinuous Musculature in the Library

Author rating: D

Making your ranged unit faster than your melee tanks is a recipe for disaster It does not address the unit's actual weaknesses This is a perfect example of a PvP upgrade copied into Coop

Corrosive Secretion

+50% damage against medium armor

View Corrosive Secretion in the Library

Author rating: B+

This brings the total bonus against Medium to +100%, or 34 damage. Reliable, bound to be useful sometime during the match

Camouflage

Unlocks Camouflage: +25% movement speed and cloak for 5 seconds. 20-second cooldown.

View Camouflage in the Library

Author rating: D

  • Cloak is removed when the unit attacks Not useful in coop ; Useless without a hold-fire button

Incubator - 100 Hexite, 50 Flux

  • Requires a Broodwomb and Biomass

  • When utilizing Incubator units, construct 3–6 Incubators

  • 2× Infused Incubator units spawn Arkanids with every kill

  • Mandragora upgrades are researched at the Young Canopy; Harbinger and Thresher upgrades are researched at the Synapse Canopy

Mandragora

Mandragora

Grell Co-Op T1.5 Army Unit

Short ranged tanky unit that deals area damage.

Author rating: S

  • Powerful Melee Brawler ; Excellent against large numbers of ground units

  • Affordable and durable ; good Armor

  • Deals splash damage ; Good DPS output

  • Has some issues with bodyblocking at 2x Infusion

  • Synergies: Believe it or not, every single unit in Vynthra's Roster... except Brood Guards

Abilities

TunnelSpell

Tunnel to target location

View Tunnel in the Library
  • Utility varies with the enemy composition

  • Using Tunnel at the back of an attack wave can leave Mandragoras out of range of healers

FrenzySpell

Lose 25% health and gain +50% attack and +30% movement speed. Requires commander 'Frenzy' level to be unlocked.

View Frenzy in the Library

(No notes.)

Upgrades

Wide Mandibles

+50% splash radius

View Wide Mandibles in the Library

Author rating: A

Reliable and powerful Remember AoE damage counts for Life-Steal

Tunnel

Grants Mandragora the ability to tunnel to a target point

View Tunnel in the Library

Author rating: B

(No additional notes.)

Endorphic Frenzy

Mandragora gains 20% attack speed for every 10% of missing health

View Endorphic Frenzy in the Library

Author rating: S

God-tier synergy with the Frenzy ability, which now gives Mandragoras 90% Attack Speed Great synergy with the Life-Steal Level upgrade

Harbinger

Harbinger

Grell Co-Op T2 Army Unit

Durable ranged unit that can cause damaging eruptions.

Author rating: C+

  • Affordable but inefficient second-line support

  • The Trick is to have a Frontline, and then 4-5 of Harbingers behind it.

  • Size and cost of roughly 2 Stingers ; DPS of only one

  • Suffers from severe bodyblocking when 2x Infused

  • Bodyblocking hurts casting ability and also hurts all other units in your army composition

  • Thus, the one unit in Vynthra's roster that should only be infused once

  • Heavily reliant on gimmicky ability damage

  • +50% Damage against Heavy

  • Cannot attack air

  • Synergies: Stinger, Brood Guard, Mandragora, Reaver

Abilities

EruptionSpell

Deals 125 damage to units in the target area after 1.5 seconds.

View Eruption in the Library
  • Its casting range is insufficient when severe body-blocking is taken into account

  • The very small AoE demands a stationary target

  • Each Infusion increases the AoE by 50%, but that is not justification to infuse Harbingers twice

  • Focus on enemy tanks, static defenses, and Heroes

FrenzySpell

Lose 25% health and gain +50% attack and +30% movement speed. Requires commander 'Frenzy' level to be unlocked.

View Frenzy in the Library

(No notes.)

Upgrades

Thermal Carapace

+2 armor

View Thermal Carapace in the Library

Author rating: C

Hardly an useful upgrade unless you want them to tank

  • Vynthra has far more efficient dedicated tank units

Cardiovascular Boost

+200 move speed

View Cardiovascular Boost in the Library

Author rating: B+

This is a 42.1% increase. Makes them faster than all Grell Units except Stingers & Weavers Useful for getting into position for using Eruption It is an indirect solution to the problem

Hemal Vents

Increases Eruption radius by 50%

View Hemal Vents in the Library

Author rating: B+

Must-have upgrade when utilizing Harbingers Still too small to be of much use

Coagulated Membrane

Reduces Eruption's health cost by 50.

View Coagulated Membrane in the Library

Author rating: C

Utility pales in comparison to its counterpart

Thresher

Thresher

Grell Co-Op T2.5 Army Unit

Long range siege unit with splash damage.

Author rating: C

  • Siege Unit, great for mobile defense

  • Competes with the best static defense in Coop

  • Did I mention you can Air-Drop static defense and a wall that heals it?

  • Expensive, as far as Vynthra units go

  • Relatively fragile and slow

  • Great Range (27 ; 31 with 2x Infusion), meh damage, deals splash

  • Projectiles do not track, can miss moving targets

  • Has a minimum range of 4-ish

  • Requires a Macrogenesis Canopy

Abilities

Take RootToggle

Rooted Threshers gain a long range AoE attack and spread biomass over a 3.75 radius. Rooted Threshers cannot move.

View Take Root in the Library

(No notes.)

Biomass Spread(Sieged mode)Passive

Spreads biomass in a 3.75 radius

View Biomass Spread in the Library

(No notes.)

FrenzySpell

Lose 25% health and gain +50% attack and +30% movement speed. Requires commander 'Frenzy' level to be unlocked.

View Frenzy in the Library

(No notes.)

Upgrades

Corroding Expulsion

Attacks create a pool of damaging acid that lasts for 6 seconds.

View Corroding Expulsion in the Library

Author rating: C

Subpar damage ; unreliable Basically one little Stinger's worth of damage

Anchoring Tendrils

Rooting and uprooting is 50% faster, +30% movement speed

View Anchoring Tendrils in the Library

Author rating: A

Exactly the kind of upgrade a Thresher needs for Coop Not useful for static/prolonged defense

Elderwomb - 125 Hexite, 75 Flux

  • Requires an Incubator and Biomass

  • When utilizing Elderwomb units, construct 3–6 Elderwombs

  • 2× Infused Elderwomb units deal AoE damage and stun once every 7 seconds

  • Reaver and Weaver upgrades are researched at the Synapse Canopy; Behemoth upgrades are researched at the Skyclutch

Reaver

Reaver

Grell Co-Op T3 Army Unit

Tanky melee unit with Ravage.

Author rating: S

  • Very powerful and reliable melee tank

  • 2k+ HP at 2x Infusion

  • Also deals AoE damage at 2x Infusion

  • Great DPS output

  • Quite large, which means it will reliable be targeted by the enemy

  • Ravage/Charge ability ensures it can be at the frontline every fight

  • Synergies: Believe it or not, every single unit in Vynthra's Roster

Abilities

RavageSpell

Charge to target location, knocking enemies back and dealing 80 damage.

View Ravage in the Library

(No notes.)

FrenzySpell

Lose 25% health and gain +50% attack and +30% movement speed. Requires commander 'Frenzy' level to be unlocked.

View Frenzy in the Library

(No notes.)

Hatch ArkanidsOn Death

Spawns 4 Arkanid when the Reaver dies.

View Hatch Arkanids in the Library

(No notes.)

Upgrades

Fluxblood Surge

Ravage: -50% Cast time, +50% damage dealt, +50% cast range.

View Fluxblood Surge in the Library

Author rating: S

Amazing upgrade, ensures the Reaver can get to the Frontline no matter where it is in your formation

Elder Carapace

+3 armor

View Elder Carapace in the Library

Author rating: B

Utility pales in comparison to its counterpart.

Weaver

Weaver

Grell Co-Op T3.5 Army Unit

Grell caster. Deals bonus damage against air.

Author rating: A-

  • Support Unit, good healing ability

  • Multiple Weavers can heal the same target

  • Good range, not-quite-fragile

  • Requires a Synapse Canopy

  • Decent DPS, but out-classed by Lashers against Ground

  • Excellent support against large numbers of enemies due to their ability.

  • Damage competes with healing weapon ; Cannot have both simultaneously

  • Weavers can quickly switch weapons mid-combat. Healing, shooting once, healing again

  • Fast, has a tendency to run ahead of army

  • As such, requires a mobile frontline unit like Reavers with Ravage, Stingers, etc

  • Can also lag behind to heal allied units, if A-clicked towards a position

  • Slower projectile speed compared to Stinger, overall less efficient in combat

  • +100% Damage against Air

Abilities

Acid BlightSpell

Create an acid puddle at target location. Puddle poisons enemy units. Lasts 10 seconds.

View Acid Blight in the Library
  • The projectile must travel to its target, creating a one-to-four-second delay before impact

  • Cast ahead of enemies rather than in their middle to reduce that delay

  • It frequently moves into range when cast beyond its reach

  • The poison refreshes until the pool expires or enemies leave it

  • Arkanid spawning stacks with other sources

  • Can hit air

Siphon LifeChannel

Drain enemy health, slowing them by 20%, and poisoning them OR Heal allies for 5 health per second and grant them 1 armor

View Siphon Life in the Library

(No notes.)

FrenzySpell

Lose 25% health and gain +50% attack and +30% movement speed. Requires commander 'Frenzy' level to be unlocked.

View Frenzy in the Library

(No notes.)

Upgrades

Koru Neuropaths

+25% cast range

View Koru Neuropaths in the Library

Author rating: B-

Quite useful for ensuring the ability makes it to the fight BEFORE the target dies

Healing

+35% healing and damage output.

View Healing in the Library

Author rating: A

Reliable and worthwhile upgrade

Behemoth

Behemoth

Grell Co-Op T3 Army Unit

Powerful flying brawler. Periodically deals area damage over time on attacks.

Author rating: A

  • Siege Flyer ; Designated Anti-Heavy unit

  • Has an unreliable secondary weapon (Fires once every 5 attacks) that shoots an AoE flame puddle

  • Ineffective beyond stationary targets, can easily miss

  • Flame puddle deals constant damage to units in its area of effect

  • Puddle lasts 10+ seconds

  • Slower projectile attack, low DPS for its cost and size

  • Expensive, by Vynthra standards

  • Greatly empowered by Infusion, which makes its attack AoE

  • In spite of being a flying unit, its attacks are still blocked by enemy buildings

  • +200% Damage against Heavy

  • Cannot target Air

  • Less recommended when facing enemy Grell, its Flame attacks can be confused for those of enemy Behemoths

Abilities

FrenzySpell

Lose 25% health and gain +50% attack and +30% movement speed. Requires commander 'Frenzy' level to be unlocked.

View Frenzy in the Library

(No notes.)

Upgrades

Behemoth Speed

+25% movement speed.

View Behemoth Speed in the Library

Author rating: C

Not much to say, low utility unless you plan to use it for Transportation

Colossal Maw

+6 attack range, for 18 total range.

View Colossal Maw in the Library

Author rating: A

Great upgrade; permits besieging objectives and bases Basically turns the Behemoth into a flying Thresher

Transportation

Allows the Behemoth to transport 30 supply of units.

View Transportation in the Library

Author rating: B+

  • Carrying capacity is not increased with Infusion

  • However Infused units cost more to be carried by the Behemoth Fast loading and unloading Loaded units cannot attack, but they are healed while inside Loaded Arkanids & other temporary units can still expire

  • Keep in mind the Behemoth, without the Speed upgrade, is still slower than most of your Roster. Overall, niche utility