Armor

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Armor is a mostly obscure stat present on both Survivors and monsters. Having positive armor reduces the damage that character takes, and having negative armor increases the damage taken. This damage modification applies to all damage taken, except for the damage from a Shrine of Blood and damage from SotV Icon.pngSotV Icon.pngSurvivors of the Void - DLC Content
Void Fog is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
Click for more info.
Void Fog.

Damage taken is multiplied by 1Armor/(100+|Armor|) . This is a number between 0 and 2.

If a character has positive armor:

  • Damage taken is multiplied by 100/(100+Armor). This is a number between 0 and 1.
  • The formula for the damage reduction is: Armor/(100+Armor).

If a character has negative armor:

  • Damage taken is multiplied by 2100/(100Armor). This is a number between 1 and 2. (Note that the negative armor is subtracted, and two negatives make a positive.)
  • The formula for the damage increase is: 100/(100Armor)1.

The armor value that modifies the damage is a sum of the following contributions:

  • The value of the armor stat (base armor + modifications)
  • +adaptive armor
  • +300 if the character is an Empathy Cores.png Empathy CoreBgBoss.pngEmpathy Cores.pngEmpathy Cores
    Recruit a pair of Solus Probes that gain power with more allies.

    Every 30 seconds, summon two Solus Probes that gain +100% (+100% per stack) damage per ally on your team.
    and the incoming attack has the AoE damage flag

The modified damage is then decreased by 5 per stack of Repulsion Armor Plate.png Repulsion Armor PlateBgCommon.pngRepulsion Armor Plate.pngRepulsion Armor Plate
Receive flat damage reduction from all attacks.

Reduce all incoming damage by 5 (+5 per stack). Cannot be reduced below 1.
. Note that the final damage can never be less than 1.

Armor Damage Reduction Damage Multiplier
-80 -44.44% 1.44
-60 -37.50% 1.38
-20 -16.67% 1.17
-10 -9.09% 1.09
0 0.00% 1
1 1.00% 0.99
5 4.76% 0.95
10 9.09% 0.91
12 10.71% 0.89
15 13.04% 0.87
20 16.67% 0.83
30 23.08% 0.77
50 33.33% 0.67
70 41.18% 0.59
100 50.00% 0.5
200 66.67% 0.33
500 83.33% 0.17
1000 90.91% 0.09
5000 98.04% 0.02
10000 99.01% 0.01
Graph of damage multiplier for values of armor from -1000 armor to 1000 armor. It can be seen that negative armor slowly approaches 2x damage taken, while positive armor slowly approaches 0x damage taken.

It would take 330 Rose Buckler.png Rose BucklersBgUncommon.pngRose Buckler.pngRose Buckler
Reduce incoming damage while sprinting.

Increase armor by 30 (+30 per stack) while sprinting.
(+30 armor per stack while sprinting) to get a damage reduction of 99% while sprinting. This would amount to 9900 armor. Another way to achieve this amount of armor would be by obtaining 99 SotV Icon.pngSotV Icon.pngSurvivors of the Void - DLC Content
Oddly-shaped Opal is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
Click for more info.
Oddly-shaped Opal.png Oddly-Shaped OpalsBgCommon.pngOddly-shaped Opal.pngSotV Icon.pngSotV Icon.pngSurvivors of the Void - DLC Content
This content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
Click for more info.
Oddly-shaped Opal
Reduce damage the first time you are hit.

Increase armor by 100 (+100 per stack) while out of danger.
to get the same damage reduction while out of combat.

Armor Modifications

Effects that increase a character's armor:

  • Playing on Drizzle.png Drizzle grants each player a hidden item which grants 70 armor.
  • Mercenary.png MercenaryMercenary.pngMercenaryThe Mercenary is a high skill melee survivor that uses his many dodges to weave in and out of combat.
    Class: Melee
    HP: 110 (+33 per level)
    Damage: 12 (+2.4 per level)
    Armor: 20
    Umbra: Hired Blade
    , REX.png REXREX.pngREXREX is a half robot / half plant that uses HP to cast devastating skills from a distance. The plant nor the robot could survive this planet alone – but thankfully they have each other.
    Class: Ranged
    HP: 130 (+39 per level)
    Damage: 12 (+2.4 per level)
    Armor: 20
    Umbra: Symbiotes
    , Loader.png LoaderLoader.pngLoaderThe Loader is a slow but powerful bruiser that can use her grappling hook to uniquely navigate the environment.
    Class: Melee
    HP: 160 (+48 per level)
    Damage: 12 (+2.4 per level)
    Armor: 20
    Umbra: Bionic Powerhouse
    , Acrid.png AcridAcrid.pngAcridAcrid is a melee-range hybrid who uses powerful poisons to melt tanky enemies.
    Class: Melee / Ranged
    HP: 160 (+48 per level)
    Damage: 15 (+3 per level)
    Armor: 20
    Umbra: Test Subject
    , SotS Icon.pngSotS Icon.pngSeekers of the Storm - DLC Content
    Seeker is part of the Seekers of the Storm DLC. It is only available if the DLC is enabled when starting a run.
    Click for more info.
    Seeker.png SeekerSeeker.pngSotS Icon.pngSotS Icon.pngSeekers of the Storm - DLC Content
    This content is part of the Seekers of the Storm DLC. It is only available if the DLC is enabled when starting a run.
    Click for more info.
    SeekerAs a meditative mid-range brawler, Seeker utilizes powerful healing to sustain herself and her team.
    Class: Ranged
    HP: 115 (+34 per level)
    Damage: 12 (+2.4 per level)
    Armor: 20
    Umbra: Diviner of House Beyond
    , and SotS Icon.pngSotS Icon.pngSeekers of the Storm - DLC Content
    False Son is part of the Seekers of the Storm DLC. It is only available if the DLC is enabled when starting a run.
    Click for more info.
    False Son.png False SonFalse Son.pngSotS Icon.pngSotS Icon.pngSeekers of the Storm - DLC Content
    This content is part of the Seekers of the Storm DLC. It is only available if the DLC is enabled when starting a run.
    Click for more info.
    False SonThe False Son is a slow but stalwart close-range warrior. With extreme health and defense, False Son can weather any storm. Use False Son's durability to stay in the fray and capitalize on his slow but deadly skills.
    Class: Melee
    HP: 180 (+54 per level)
    Damage: 13 (+2 per level)
    Armor: 20
    Umbra: The Shattered Heir
    each have 20 base armor.
  • MUL-T.png MUL-TMUL-T.pngMUL-TMUL-T is an aggressive survivor who has the tools necessary for any job!
    Class: Melee / Ranged
    HP: 200 (+60 per level)
    Damage: 11 (+2.2 per level)
    Armor: 12
    Umbra: Right Tool for the Wrong Job
    has 12 base armor.
  • MUL-T.png MUL-T'sMUL-T.pngMUL-TMUL-T is an aggressive survivor who has the tools necessary for any job!
    Class: Melee / Ranged
    HP: 200 (+60 per level)
    Damage: 11 (+2.2 per level)
    Armor: 12
    Umbra: Right Tool for the Wrong Job
    Transport Mode.png Transport ModeTransport Mode.pngTransport Mode (Utility)Heavy. Zoom forward, gaining 200 armor and 220% movement speed. Deals 250% damage to enemies.
    Survivor: MUL-T
    grants 200 armor while active.
  • MUL-T.png MUL-T'sMUL-T.pngMUL-TMUL-T is an aggressive survivor who has the tools necessary for any job!
    Class: Melee / Ranged
    HP: 200 (+60 per level)
    Damage: 11 (+2.2 per level)
    Armor: 12
    Umbra: Right Tool for the Wrong Job
    Power Mode.png Power ModePower Mode.pngPower Mode (Special)Enter a heavy stance, equipping both your primary attacks at once. Gain 100 armor, but lose -60% movement speed.
    Survivor: MUL-T
    grants 100 armor while active.
  • Rose Buckler.png Rose BucklersBgUncommon.pngRose Buckler.pngRose Buckler
    Reduce incoming damage while sprinting.

    Increase armor by 30 (+30 per stack) while sprinting.
    grant 30 armor per stack while sprinting.
  • Jade Elephant.png Jade ElephantBgEquipment.pngJade Elephant.png45sJade Elephant
    Gain massive armor for 5 seconds.

    Gain 500 armor for 5 seconds.
     grants 500 armor while Status ElephantArmorBoost.png activeStatus ElephantArmorBoost.pngElephant Armor Boost (Buff)
    Gain massive armor.Gain +500 armor, negating most attacks.
    .
  • Spinel Tonic.png Spinel TonicBgLunar.pngSpinel Tonic.png60sSpinel Tonic
    Gain a massive boost to ALL stats. Chance to gain an affliction that reduces ALL stats.

    Drink the Tonic, gaining a boost for 20 seconds. Increases damage by +100%. Increases attack speed by +70%. Increases armor by +20. Increases maximum health by +50%. Increases passive health regeneration by +300%. Increases movespeed by +30%.

    When the Tonic wears off, you have a 20% chance to gain a Tonic Affliction, reducing all of your stats by -5% (-5% per stack).
    grants 20 armor while Status TonicBuff.png activeStatus TonicBuff.pngTonic Buff (Buff)
    Gain a massive boost to all stats.Gain the following boosts:
    +150% max health
    +150% max shield
    +170% attack speed
    +130% movement speed
    +20 armor
    +200% base damage
    +400% health regeneration
    .
  • Irradiant Pearl.png Irradiant PearlsBgBoss.pngIrradiant Pearl.pngIrradiant Pearl
    Increase ALL of your stats.

    Increases ALL stats by 10% (+10% per stack).
    increase base armor by 10% per stack.
  • SotV Icon.pngSotV Icon.pngSurvivors of the Void - DLC Content
    Oddly-shaped Opal is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
    Click for more info.
    Oddly-shaped Opal.png Oddly-shaped OpalsBgCommon.pngOddly-shaped Opal.pngSotV Icon.pngSotV Icon.pngSurvivors of the Void - DLC Content
    This content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
    Click for more info.
    Oddly-shaped Opal
    Reduce damage the first time you are hit.

    Increase armor by 100 (+100 per stack) while out of danger.
    grants 100 armor per stack while out of danger.
  • SotV Icon.pngSotV Icon.pngSurvivors of the Void - DLC Content
    Void Fiend is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
    Click for more info.
    Void Fiend.png Void Fiend'sVoid Fiend.pngSotV Icon.pngSotV Icon.pngSurvivors of the Void - DLC Content
    This content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
    Click for more info.
    Void FiendThe Void Fiend is a corrupted survivor that fluctuates between a controlled and corrupted form, each with different strengths and weaknesses. Managing this curse has become its fate.
    Class: Ranged
    HP: 110 (+33 per level)
    Damage: 12 (+2.4 per level)
    Armor: 0
    Umbra: Corrupted Amnesiac
    Void Corruption.png Void CorruptionVoid Corruption.pngVoid Corruption (Passive)At full Corruption, transform your abilities into more aggressive forms.
    Survivor: Void Fiend
    grants 100 armor while corrupted.

Boss Monsters have some base armor. See their individual pages for exact values.

  • Clay Dunestrider.png Clay Dunestrider'sClay Dunestrider.pngClay Dunestrider
    Ravenous SymbiontHP: 2100 (+630 per level)
    Damage: 25 (+5 per level)
    Class: Ranged
    Speed: 9 m/s
    Armor: 20
    life-draining tendrils grant the Dunestrider 200 armor while active.
  • Scavenger.png ScavengersScavenger.pngScavenger
    Item HoarderHP: 3800 (+1140 per level)
    Damage: 4 (+0.8 per level)
    Class: Ranged
    Speed: 3 m/s
    Armor: 20
    gain 200 armor while looking for an item.
  • Mithrix.png MithrixMithrix.pngMithrix
    King of NothingHP: 1000 (+300 per level)
    Damage: 16 (+3.2 per level)
    Class: Melee / Ranged
    Speed: 15 m/s
    Armor: 20
    gains 200 armor while performing his Shock Wave attack.

Effects that reduce a character's armor:

  • TheStatus Cripple.png CrippleStatus Cripple.pngCripple (Debuff)
    Reduces armor by 20. Reduces movement speed by 50%.
    debuff reduces the victim's armor by 20.
  • REX.png REX'sREX.pngREXREX is a half robot / half plant that uses HP to cast devastating skills from a distance. The plant nor the robot could survive this planet alone – but thankfully they have each other.
    Class: Ranged
    HP: 130 (+39 per level)
    Damage: 12 (+2.4 per level)
    Armor: 20
    Umbra: Symbiotes
    Natural Toxins.png Weaken/Natural ToxinsNatural Toxins.pngNatural Toxins (Passive)Certain attacks Weaken enemies hit, reducing their movement speed, armor, and damage.
    Survivor: REX
    reduces targets' armor by 30.
  • Shattering Justice.png Shattering JusticeBgLegendary.pngShattering Justice.pngShattering Justice
    Reduce the armor of enemies after repeatedly striking them.

    After hitting an enemy 5 times, reduce their armor by 60 for 8 (+8 per stack) seconds.
    inflicts Status Pulverized.png PulverizedStatus Pulverized.pngPulverized (Debuff)
    Reduce armor greatly.Reduces armor by 60.
    , reducing targets' armor by 60.
  • SotV Icon.pngSotV Icon.pngSurvivors of the Void - DLC Content
    Symbiotic Scorpion is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
    Click for more info.
    Symbiotic Scorpion.png Symbiotic ScorpionBgLegendary.pngSymbiotic Scorpion.pngSotV Icon.pngSotV Icon.pngSurvivors of the Void - DLC Content
    This content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
    Click for more info.
    Symbiotic Scorpion
    Permanently reduce armor on hit.

    100% chance on hit to reduce armor by 2 (+2 per stack) permanently.
    inflicts SotV Icon.pngSotV Icon.pngSurvivors of the Void - DLC Content
    Permanent Armor Reduction is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
    Click for more info.
    Status PermanentDebuff.png Permanent Armor ReductionStatus PermanentDebuff.pngSotV Icon.pngSotV Icon.pngSurvivors of the Void - DLC Content
    This content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
    Click for more info.
    Permanent Armor Reduction (Debuff)
    Permanently reduces armor.Reduces armor by 2 (2 per stack) for the remainder of the stage, or until killed.
    (stackable)
    , reducing targets' armor permanently by 2 (+2 per stack) on every hit.

Adaptive Armor

Mithrix.png MithrixMithrix.pngMithrix
King of NothingHP: 1000 (+300 per level)
Damage: 16 (+3.2 per level)
Class: Melee / Ranged
Speed: 15 m/s
Armor: 20
and the SotV Icon.pngSotV Icon.pngSurvivors of the Void - DLC Content
Voidling is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
Click for more info.
Voidling.png VoidlingVoidling.pngSotV Icon.pngSotV Icon.pngSurvivors of the Void - DLC Content
This content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run.
Click for more info.
Voidling
Diviner of the DeepHP: 2000 (+600 per level)
Damage: 15 (+3 per level)
Class: Ranged
Speed: 45 m/s
Armor: 20
have the adaptive armor passive stat, which protect them against bursts of damage. Every time they take damage, they gain temporary armor equal to 3000×(damage/maxHP), or 30 armor per 1% of the max HP dealt. This armor caps at 400 and decays at a rate of 40 per second.