Stun

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Unable to move, block, attack, or use skills.
—In-game tip

Stun is a Negative Status in Arknights.

Effect

A Stunned unit is indicated by a "dizzy" effect above them, with Operators and certain enemies (notably Mephisto and W) having a special animation used when they are Stunned. In this state, the unit is disabled where they cannot attack, move, use skills, and block enemies, the latter of which can be dangerous if the Stunned friendly unit is a frontline Operator as this will allow enemies to move past them! Stunned friendly units may still be retreated, however.

Sources

  • U-Official's Short-Circuiting Genius talent Stuns all units, friendly and enemy, within her range for 5–7.5 seconds after a short delay from when she is deployed.

Against enemies

Operators

Operator Source Range/target Duration
Aak icon.png
Drug Cocktail Administration Randomly on attack
  • Base: 0.6 seconds
  • Elite 1: 0.8 seconds
  • Elite 2: 1 second
  • GEE-X Stage 2: 1.1 seconds
  • GEE-X Stage 3: 1.2 seconds
Ambriel icon.png
Precise Strike Attack against enemies outside the normal attack range with a 25% (+3% P5) chance 2 seconds
Ash icon.png
Auxiliary Equipment Within attack range when deployed, AoE
  • Elite 1: 3 seconds
  • Elite 2: 4 seconds
Beeswax icon.png
Skill-Beeswax2.png
Guardian Obelisk
Sand Obelisk deployment
  
  
  
  • Level 1-6: 1 second
  • Level 7: 1.5 seconds
  • Mastery 1: 2 seconds
  • Mastery 2: 2.5 seconds
  • Mastery 3: 3 seconds
Bibeak icon.png
Skill-Bibeak2.png
Blade Swap
Up to 5 enemies within range
    
  
    
  • Level 1-3: 0.8 seconds
  • Level 4-6: 1 second
  • Level 7: 1.2 seconds
  • Mastery 1: 1.4 seconds
  • Mastery 2: 1.6 seconds
  • Mastery 3: 1.8 seconds
Blitz icon.png
Skill-Blitz1.png
Flash Shield
   
  
   
  • Level 1-3: 2.5 seconds
  • Level 4-6: 3 seconds
  • Level 7: 3.5 seconds
  • Mastery 1: 3.8 seconds
  • Mastery 2: 4.1 seconds
  • Mastery 3: 4.5 seconds
Skill-Blitz2.png
Shield Bash
Blocked enemies
  • Level 1-6: 5 seconds
  • Level 7-Mastery 2: 6 seconds
  • Mastery 3: 7 seconds
Ch'en icon.png
Skill-Ch'en1.png
Sheathed Strike
Attack when charged
  • Level 1-3: 1 second
  • Level 4-6: 1.25 seconds
  • Level 7-Mastery 3: 1.5 seconds
Skill-Ch'en3.png
Chi Xiao - Shadowless
Last hit
    
  
  
    
  • Level 1-3: 2 seconds
  • Level 4-6: 2.5 seconds
  • Level 7-Mastery 2: 3 seconds
  • Mastery 3: 4 seconds
Click icon.png
Skill-Click1.png
Synchronized Attack
Attack (both Click herself and her Drone) while active
  
  
  
  • Level 1-3: 20% chance, 0.4 seconds
  • Level 4-6: 23% chance, 0.4 seconds
  • Level 7: 23% chance, 0.7 seconds
  • Mastery 1-2: 27% chance, 0.7 seconds
  • Mastery 3: 27% chance, 1 second
Cliffheart icon.png
Skill-Cliffheart2.png
Binding Chains
Up to 2 (L1-7)/3 (M1-3) enemies within range
   
  
   
  • Level 1-7: 1.5 seconds
  • Mastery 1: 2 seconds
  • Mastery 2: 2.5 seconds
  • Mastery 3: 3 seconds
Croissant icon.png
Skill-Croissant2.png
Magnetic Hammer
    
  
    
  • Level 1-3: 2.5 seconds
  • Level 4-6: 3 seconds
  • Level 7-Mastery 2: 3.5 seconds
  • Mastery 3: 4 seconds
Enforcer icon.png
Skill-Enforcer1.png
Deterring Shot
Shifted enemies if they comes in contact with a high tile
  • Level 1: 1.2 seconds
  • Level 2: 1.3 seconds
  • Level 3-4: 1.4 seconds
  • Level 5: 1.5 seconds
  • Level 6: 1.6 seconds
  • Level 7: 1.7 seconds
  • Mastery 1: 1.8 seconds
  • Mastery 2: 1.9 seconds
  • Mastery 3: 2 seconds
Skill-Enforcer2.png
Staggering Shot
Shifted enemies (extended upon coming into contact with a high tile) and others coming into contact with them
  
  • Level 1: 1.6 (2.7) seconds
  • Level 2: 1.7 (2.8) seconds
  • Level 3: 1.8 (2.9) seconds
  • Level 4: 1.9 (3) seconds
  • Level 5: 2 (3.1) seconds
  • Level 6: 2.1 (3.2) seconds
  • Level 7: 2.2 (3.4) seconds
  • Mastery 1: 2.3 (3.6) seconds
  • Mastery 2: 2.4 (3.8) seconds
  • Mastery 3: 2.5 (4) seconds
Eunectes icon.png
Skill-Eunectes2.png
Menacing Slash
Enemies blocked by Eunectes Until the skill expires
Flametail icon.png
Skill-Flametail2.png
"Pinus Sylvestris"
    
  
  
    
0.5 seconds ×2
Frost icon.png
Skill-Frost1.png
Trap Deployment
Welcome Mat trigger
  • Level 1-7: 1 second
  • Mastery 1-2: 1.2 seconds
  • Mastery 3: 1.5 seconds
Glaucus icon.png
Skill-Glaucus2.png
Counter EMP
Only applies to Drones
      
    
  
  
    
      
  • Level 1-3: 3.5 seconds
  • Level 4-6: 4 second
  • Level 7: 4.5 seconds
  • Mastery 1: 5 seconds
  • Mastery 2: 5.5 seconds
  • Mastery 3: 6 seconds
Gummy icon.png
Frying Pan Specialist Attack
  • Elite 1: 10% chance, lasts 0.5 seconds
  • Elite 2: 15% chance, lasts 1 second
  • GUA-X Stage 2: 20% chance, 1.5 seconds
  • GUA-X Stage 3: 23% chance, 1.5 seconds
Hoederer icon.png
Skill-Hoederer2.png
Burden of Cinder and Ash
Attack in the alternate stance 1 second
Skill-Hoederer3.png
Fog of War Upon Death's Door
Attack with a 25% chance while active 2 seconds
Jessica the Liberated icon.png
Skill-TheLiberated3.png
Saturation Burst
Enemies caught in the shell's blast (radius 1.7 tiles)
  • Level 1-7: 5 seconds
  • Mastery 1-2: 5.5 seconds
  • Mastery 3: 6 seconds
Kal'tsit icon.png
Non-Damaging Restructuring When Mon3tr is defeated (not retreated)
  
  
  
3 (+0.5 P5) seconds
Kroos the Keen Glint icon.png
Bullseye Attack
  • Elite 1: 10% chance, lasts 0.2 seconds
  • Elite 2: 20% chance, lasts 0.2 seconds
Lee icon.png
Preparedness Averts Peril The enemy that Stuns/Freezes Lee while in effect 3 seconds
Lin icon.png
Foolproof Plan Crystal Barrier shatter, all enemies within attack range 1 second
Liskarm icon.png
Skill-Liskarm2.png
Counter Arc
Attack while active, hits up to 3 (L1-M2)/4 (M3) targets 3 seconds
  • Level 1-3: 10% chance
  • Level 4-6: 15% chance
  • Level 7-Mastery 2: 20% chance
  • Mastery 3: 25% chance
Manticore icon.png
Skill-Manticore2.png
Toxic Overload
Attack while active
  • Level 1-3: 0.5 seconds
  • Level 4-6: 0.6 seconds
  • Level 7: 0.7 seconds
  • Mastery 1: 0.8 seconds
  • Mastery 2: 0.9 seconds
  • Mastery 3: 1 second
May icon.png
Skill-May2.png
Binding Shock
Attack with a 30% chance while active
  • Level 1-3: 0.9 seconds
  • Level 4-7: 1 second
  • Mastery 1-2: 1.1 seconds
  • Mastery 3: 1.2 seconds
Mizuki icon.png
Skill-Mizuki3.png
Moon in the Water
Attack while active
  
 
 
  
  • Level 1-3: 0.9 seconds
  • Level 4-7: 1 second
  • Mastery 1-2: 1.1 seconds
  • Mastery 3: 1.2 seconds
Mostima icon.png
Skill-Mostima2.png
Lock of Shattered Time
Enemies within attack range
  • Level 1-3: 4 seconds
  • Level 4-6: 5 seconds
  • Level 7-Mastery 2: 6 seconds
  • Mastery 3: 7 seconds
Mr. Nothing icon.png
Unexpected Strike Attack after not attacking for 4 seconds (E1)/3 seconds (MER-X Stage 3)
  • Elite 1: 3 seconds
  • Elite 2: 4 seconds
  • MER-X Stage 2: 5 seconds
Mudrock icon.png
Skill-Mudrock2.png
Crag Splitter
Attack with a 30% chance when charged
  
  
  
  • Level 1-3: 0.4 seconds
  • Level 4-6: 0.5 seconds
  • Level 7: 0.6 seconds
  • Mastery 1: 0.8 seconds
  • Mastery 2: 1 second
  • Mastery 3: 1.2 seconds
Skill-Mudrock3.png
Bloodline of Desecrated Earth
    
  
  
    
After the first phase ends
  • Level 1-6: 3 seconds
  • Level 7: 3.5 seconds
  • Mastery 1: 4 seconds
  • Mastery 2: 4.5 seconds
  • Mastery 3: 5 seconds
Muelsyse icon.png
Skill-Muelsyse3.png
Superficial Regulation
Enemies blocked by the Flowing Shape after it copies a melee Operator Until the skill expires
Nearl the Radiant Knight icon.png
Skill-RadiantKnight3.png
Blazing Sun's Obeisance
Blazing Sun deployment
    
  
    
3 seconds
Brave the Darkness When deployed
    
  
    
  • Elite 1: 2 seconds
  • Elite 2: 3 seconds
Penance icon.png
Skill-Penance1.png
Last Word
Attack when Overcharged
  • Level 1-7: 3 seconds
  • Mastery 1-2: 4 seconds
  • Mastery 3: 5 seconds
Phantom icon.png
Skill-Phantom3.png
Night Raid
Randomly when deployed
  
  
  
  • Level 1-3: 2 seconds
  • Level 4-6: 2.5 seconds
  • Level 7: 3 seconds
  • Mastery 1: 3.5 seconds
  • Mastery 2: 4 seconds
  • Mastery 3: 4.5 seconds
Projekt Red icon.png
Skill-ProjektRed2.png
Wolfpack
When deployed
    
  
    
  • Level 1-3: 1 seconds
  • Level 4-6: 1.5 seconds
  • Level 7: 2 seconds
  • Mastery 1: 2.3 seconds
  • Mastery 2: 2.6 seconds
  • Mastery 3: 3 seconds
Quartz icon.png
Skill-Quartz2.png
All-Out Clash
Attack with a 25% chance while active 2 seconds
Rosmontis icon.png
Skill-Rosmontis2.png
Nociceptor Inhibition
Attack with a 20% chance while active
  • Level 1-3: 0.7 seconds
  • Level 4-6: 0.9 seconds
  • Level 7: 1.1 seconds
  • Mastery 1: 1.2 seconds
  • Mastery 2: 1.3 seconds
  • Mastery 3: 1.5 seconds
Skill-Rosmontis3.png
"As You Wish"
Rosmontis's Tactical Equipment deployment
  
  
  
  • Level 1-3: 1.5 seconds
  • Level 4-6: 2 seconds
  • Level 7-Mastery 2: 2.5 seconds
  • Mastery 3: 3 seconds
Siege icon.png
Skill-Siege2.png
Skull Breaker
Attack with a 40% chance while active
  • Level 1-3: 0.5 seconds
  • Level 4-6: 0.8 seconds
  • Level 7: 1.1 seconds
  • Mastery 1: 1.2 seconds
  • Mastery 2: 1.3 seconds
  • Mastery 3: 1.5 seconds
Skyfire icon.png
Skill-Skyfire1.png
Fire of Heaven
Attack while active
  • Level 1-3: 0.1 seconds
  • Level 4-6: 0.15 seconds
  • Level 7: 0.2 seconds
  • Mastery 1: 0.4 seconds
  • Mastery 2: 0.6 seconds
  • Mastery 3: 1 second
Spuria icon.png
Differential Reloading Experiment Randomly on attack
  • Base: 30% chance, 0.5 seconds
  • Elite 1: 50% chance, 1 second
  • Elite 2: 70% chance, 1 second
Terra Research Commission icon.png
Felyne Lottery Bomb Randomly on attack unless when the talent is disabled
  • P0-P2: 0.1 seconds
  • P3-P6: 0.2 seconds
Texas icon.png
Skill-Texas1.png
Sword Rain
Inflicted twice
    
  
  
    
  • Level 1-7: 2 seconds
  • Mastery 1-3: 3 seconds
Texas the Omertosa icon.png
Skill-Omertosa3.png
Torrential Sword Rain
All enemies for the main attack and up to 2 (L1-6)/3 (L7-M3) enemies within range (inflicted every second) while active
  
  
  
  • Level 1-6: 2/0.2 seconds
  • Level 7-Mastery 3: 3/0.2 seconds
  • Mastery 3: 4/0.2 seconds
Tomimi icon.png
Skill-Tomimi2.png
Gavial's Protection Plan
Randomly on attack while active
     
    
     
  • Level 1-3: 50% chance, 0.6 seconds
  • Level 4-6: 60% chance, 0.8 seconds
  • Level 7: 70% chance, 1.2 seconds
  • Mastery 1: 80% chance, 1.2 seconds
  • Mastery 2: 90% chance, 1.2 seconds
  • Mastery 3: 100% chance, 1.6 seconds
Typhon icon.png
Skill-Typhon2.png
Order of the Icefield
Attack with a 40% chance while active 1 second
Skill-Typhon3.png
"Eternal Hunt"
Arrow barrage, hits random targets 4 (L1-7)/5 (M1-3) times
  
  
  
0.4 seconds
W icon.png
Skill-W1.png
King of Heart
Within attack range, radius 1.2 tiles
  • Level 1-3: 1.5 seconds
  • Level 4-6: 1.8 seconds
  • Level 7: 2.1 seconds
  • Mastery 1: 2.4 seconds
  • Mastery 2: 2.7 seconds
  • Mastery 3: 3 seconds
Skill-W2.png
Jack in the Box
Front Toward Enemy detonation, radius 1.5 tiles
  • Level 1-3: 1.4 seconds
  • Level 4-6: 1.6 seconds
  • Level 7-Mastery 1: 1.8 seconds
  • Mastery 2: 2 seconds
  • Mastery 3: 2.2 seconds
Skill-W3.png
D12
Up to 3 (L1-7)/4 (M1-3) enemies within attack range, radius 1.2 tiles
  • Level 1-3: 3 seconds
  • Level 4-6: 3.5 seconds
  • Level 7-Mastery 1: 4 seconds
  • Mastery 2: 4.5 seconds
  • Mastery 3: 5 seconds
Weedy icon.png
Skill-Weedy1.png
Barrel Burst
Attack when charged
  • Level 1-6: 0.8 seconds
  • Level 7: 0.9 seconds
  • Mastery 1: 1 second
  • Mastery 2: 1.1 seconds
  • Mastery 3: 1.2 seconds
Wind Chimes icon.png
Skill-WindChimes2.png
Longing for Home
When unleashed 1 second

Other

Against friendlies

Operators

Operator Source Range/target Duration
Amiya icon.png
Skill-Amiya1.png
Spirit Burst
Self 10 seconds after Spirit Burst expires
Aurora icon.png
Skill-Aurora1.png
Homeland Protector
5 seconds after Homeland Protector expires
Broca icon.png
Skill-Broca2.png
High-Voltage Current
After the skill expires
  • Level 1-3: 8 seconds
  • Level 4-6: 7 seconds
  • Level 7-Mastery 2: 6 seconds
  • Mastery 3: 5 seconds
Bryophyta icon.png
Skill-Bryophyta2.png
Earthen Tenacity
Conviction icon.png
Skill-Conviction2.png
Genesis
Only if Genesis fails (50% chance, all friendlies within range)
    
  
  
    
5 seconds
Safe Landing Self 10 seconds after deployment
Corroserum icon.png
Skill-Corroserum1.png
Focus Overload
10 seconds after Focus Overload expires
Eunectes icon.png
Skill-Eunectes3.png
Iron Will
5 seconds after Iron Will expires
Gitano icon.png
Skill-Gitano1.png
Destiny
After Destiny expires
  • Level 1-3: 15 seconds
  • Level 4-6: 14 seconds
  • Level 7: 13 seconds
  • Mastery 1: 12 seconds
  • Mastery 2: 11 seconds
  • Mastery 3: 10 seconds
Liskarm icon.png
Skill-Liskarm2.png
Counter Arc
5 seconds after Counter Arc expires
Rockrock icon.png
Skill-Rockrock2.png
Willing Burden
Overload duration (unless if the skill is deactivated before Overloaded)
Scene icon.png
Skill-Scene2.png
Panoramic Overload
All deployed Mobile Buggy Cams 5 seconds after Panoramic Overload expires
Specter icon.png
Skill-Specter1.png
Bone Fracture
Self 10 seconds after Bone Fracture expires
Spuria icon.png
Skill-Spuria2.png
On-the-Fly Weapon Modding
Self and the affected Sniper when attacking
  • Level 1-3: 35% chance, 3 seconds
  • Level 4-6: 30% chance, 2.5 seconds
  • Level 7-Mastery 1: 25% chance, 2 seconds
  • Mastery 2: 25% chance, 1.8 seconds
  • Mastery 3: 20% chance, 1.5 seconds

Enemies

Enemy Method Duration
Defense Crusher sprite.png
Defense Crusher Leader sprite.png
Every third attacks 7 seconds
Dockworker sprite.png
Dockworker Leader sprite.png
Every fourth attacks
Sniper
Every third attacks 5 seconds
Sniper Leader sprite.png
15 seconds
"The Big Ugly Thing"
Explosion when HP reaches 0 for the first time (radius 3 tiles)
  • Level 0: 16 seconds
  • Level 1: 25 seconds
Lost Colossus sprite.png
Boulder attack (range 2.5 tiles, 13 seconds cooldown; will never be used against Stunned friendlies unless if no other targets are available) 25 seconds
Jesselton Williams
Every fourth attacks (up to 2 targets) 3 seconds
The Blood Knight Dikaiopolis
Exsanguination (global range, 10 [after spawning]/15 seconds cooldown) 10 seconds
Remnant Field Caster sprite.png
Remnant Elite Field Caster sprite.png
Crimson Formation (attached onto the target in each attack) 10 seconds or until the Formation is destroyed
Kreide, "Worldly Remains"
Attack when blocked (radius 0.8/1.2 [second phase] tiles) 6 seconds
"Shiny Pooloo"
Every fourth attacks; will never target Stunned friendlies unless if no other targets are available 20 seconds
"Materialist Antagonizer"
Interference attack, inflicted every 5 seconds (radius 3×3 tiles) 3 seconds
R-31 Heavy Power Armor sprite.png
R-31a Heavy Power Armor sprite.png
Overload attacks 2 seconds each
Dorothy
Trap trigger 10 seconds
"Awaken"
Shattered Vision on the second phase; only affects units on ranged tiles 15 seconds
Crying Thief sprite.png
Attack 4 seconds
"Al-Rafiq"
Explosion when the power armor is destroyed (radius 1.5 tiles) 10 seconds
Elder Vinecreeps sprite.png
Weaving Vinecreeps sprite.png
Every third attacks 15 seconds
"Samivilinn," the Resolution of the Very North
Surge of Nature (40/60 seconds cooldown) 10 seconds
"Clip" Cliff
  • Quickdraw (first phase; 15/30 seconds cooldown)
  • Stroke of Thunder (replaces Quickdraw in the second phase; 15/30 seconds cooldown which is refreshed if the target leaves the map amidst the attack)
6 seconds
Sarkaz Heirbearer Punisher sprite.png
Sarkaz Heirbearer Scourger sprite.png
AoE attack every fourth attacks 4 seconds
Duq'arael, "Regent's Crimson"
Blood Surge (when defeated in the first phase and after using Sunken Death on the second phase) 5 seconds
Remnant Orchestra Wind Player sprite.png
Witch King's Orchestra Wind Player sprite.png
Attack while the melancholic variation is in effect 10 seconds

Other

  • When Nervous Impairment explodes, the victim will be Stunned for 10 seconds.
  • When a friendly Gelato Stop's HP reaches 0, friendly units in its range will be Stunned for 5 seconds.
  • In Stationary Security Service:
    • If a deployed Contaminated Mineral is not destroyed in time, it will explode, Stunning friendly units caught in its blast for 5 seconds.
    • Whenever a Heat Cluster is transferred to the Deployment Waiting Zone, all friendly units will be Stunned for 5 seconds.
    • Whenever a Shoddy Flashbang is transferred to the Deployment Waiting Zone, all friendly units on ranged tiles will be Stunned for 8 seconds.

Interactions

Friendlies

Operator Subject Interaction
Ash icon.png
Skill-Ash2.png
Assault Tactics
Ash's attacks while Assault Tactics is active deals more damage against Stunned enemies:
  • Level 1: 150%
  • Level 2: 160%
  • Level 3: 170%
  • Level 4: 180%
  • Level 5: 180%
  • Level 6: 200%
  • Level 7: 210%
  • Mastery 1: 220%
  • Mastery 2: 230%
  • Mastery 3: 250%
Blitz icon.png
Shielded Shooting Blitz attacks Stunned enemies over the others and his ATK is increased against Stunned enemies, which is multiplied while Skill-Blitz2.png Shield Bash is active.
  • Damage increase
    • Elite 1: 130%
    • Elite 2: 160%
    • Potential 5: +5%
  • Damage multiplier
    • Level 1-3: 1.2×
    • Level 4-6: 1.3×
    • Level 7: 1.4×
    • Mastery 1-3: 1.5×
Hoederer icon.png
Do or Die The ATK increase is enhanced when Hoederer attacks Stunned enemies.
  • Elite 1: 105% > 125%
  • Elite 2: 110% > 140%
Lee icon.png
Preparedness Averts Peril The next DP drain instance drains 5 DP instead (unless there is not enough DP) to block the next Stun/Freeze received by Lee.
W icon.png
Insult to Injury Stunned enemies within W's attack range takes +18% (+3% P5) Physical damage.

Enemies

Enemies with Low-Altitude Hovering will lose it when Stunned for the first time, unless if they are immune to Stun themselves.

In Integrated Strategies, the Collectibles String Puppet and Children's Puppet (as well as Renowned Singer.png "Renowned Singer" in Crimson Solitaire) cause Stunned enemies to periodically receive Arts damage.

Trivia

  • There are actually two flags in the game for the Stun status effect. The one in use in majority is the traditional "STUNNED" flag. There exists, however, an unused "STUNNED_NO_AMPLIFY_DAMAGE" flag which has the effect of traditional stun but does not apply the aforementioned damage amplifications in the Interactions section.
  • Unlike any other sources, Sarkaz Caster (Leader)'s leash ability also inflicts Stun, albeit lacking the "dizzy" effect on the target.