Stun
“ | 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 |
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Drug Cocktail Administration | Randomly on attack |
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Precise Strike | Attack against enemies outside the normal attack range with a 25% (+3% P5) chance | 2 seconds | |
Auxiliary Equipment | Within attack range when deployed, AoE |
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![]() Guardian Obelisk |
Sand Obelisk deployment □□□
□■□
□□□ |
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![]() Blade Swap |
Up to 5 enemies within range □□
■□□□
□□ |
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![]() Flash Shield |
□□
■□□
□□ |
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![]() Shield Bash |
Blocked enemies |
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![]() Sheathed Strike |
Attack when charged |
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![]() Chi Xiao - Shadowless |
Last hit □
□□□
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□ |
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![]() Synchronized Attack |
Attack (both Click herself and her Drone) while active □□□□
■□□□
□□□□ |
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![]() Binding Chains |
Up to 2 (L1-7)/3 (Sp1-3) enemies within range □□□
■□□□
□□□ |
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![]() Magnetic Hammer |
□
□■□
□ |
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![]() Deterring Shot |
Shifted enemies if they comes in contact with a high tile |
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![]() Staggering Shot |
Shifted enemies (extended upon coming into contact with a high tile) and others coming into contact with them ■□□ |
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![]() Menacing Slash |
Enemies blocked by Eunectes | Until the skill expires | |
![]() "Pinus Sylvestris" |
□
□□□
□□■□□
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0.5 seconds ×2 | |
![]() Trap Deployment |
Welcome Mat trigger |
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![]() Counter EMP |
Only applies to Drones □
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Frying Pan Specialist | Attack |
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![]() Burden of Cinder and Ash |
Attack in the alternate stance | 1 second | |
![]() Fog of War Upon Death's Door |
Attack with a 25% chance while active | 2 seconds | |
![]() Saturation Burst |
Enemies caught in the shell's blast (radius 1.7 tiles) |
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Non-Damaging Restructuring | When Mon3tr is defeated (not retreated) □□□
□■□
□□□ |
3 (+0.5 P5) seconds | |
Bullseye | Attack |
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Preparedness Averts Peril | The enemy that Stuns/Freezes Lee while in effect | 3 seconds | |
Foolproof Plan | Crystal Barrier shatter, all enemies within attack range | 1 second | |
![]() Counter Arc |
Attack while active, hits up to 3 (L1-Sp2)/4 (Sp3) targets | 3 seconds
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![]() Toxic Overload |
Attack while active |
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![]() Binding Shock |
Attack with a 30% chance while active |
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![]() Moon in the Water |
Attack while active □□□
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□■□□□
□□□□
□□□ |
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![]() Lock of Shattered Time |
Enemies within attack range |
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Unexpected Strike | Attack after not attacking for 4 seconds (E1)/3 seconds (MER-X Stage 3) |
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![]() Crag Splitter |
Attack with a 30% chance when charged □□□
□■□
□□□ |
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![]() Bloodline of Desecrated Earth |
□
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□□■□□
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After the first phase ends
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![]() Superficial Regulation |
Enemies blocked by the Flowing Shape after it copies a melee Operator | Until the skill expires | |
![]() Blazing Sun's Obeisance |
Blazing Sun deployment □
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□ |
3 seconds | |
Brave the Darkness | When deployed □
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□ |
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![]() Last Word |
Attack when Overcharged |
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![]() Night Raid |
Randomly when deployed □□□
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□□□ |
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![]() Wolfpack |
When deployed □
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□ |
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![]() All-Out Clash |
Attack with a 25% chance while active | 2 seconds | |
![]() Nociceptor Inhibition |
Attack with a 20% chance while active |
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![]() "As You Wish" |
Rosmontis's Tactical Equipment deployment □□□
□■□
□□□ |
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![]() Skull Breaker |
Attack with a 40% chance while active |
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![]() Fire of Heaven |
Attack while active |
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Differential Reloading Experiment | Randomly on attack |
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Felyne Lottery Bomb | Randomly on attack unless when the talent is disabled |
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![]() Sword Rain |
Inflicted twice □
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□□■□□
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□ |
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![]() Torrential Sword Rain |
All enemies for the main attack and up to 2 (L1-6)/3 (L7-Sp3) enemies within range (inflicted every second) while active □□□
□■□
□□□ |
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![]() Gavial's Protection Plan |
Randomly on attack while active □
■□
□ |
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![]() Order of the Icefield |
Attack with a 40% chance while active | 1 second | |
![]() "Eternal Hunt" |
Arrow barrage, hits random targets 4 (L1-7)/5 (Sp1-3) times □□□
□■□
□□□ |
0.4 seconds | |
![]() King of Heart |
Within attack range, radius 1.2 tiles |
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![]() Jack in the Box |
Front Toward Enemy detonation, radius 1.5 tiles |
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![]() D12 |
Up to 3 (L1-7)/4 (Sp1-3) enemies within attack range, radius 1.2 tiles |
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![]() Barrel Burst |
Attack when charged |
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![]() Longing for Home |
When unleashed | 1 second |
Other
- Stun Generators' EMP Blast Stun enemies in the surrounding tiles for 7 seconds (15 seconds for those in Pyrite Gorge).
- Mr. Booms' Ill Temper Stun enemies in the adjacent tiles for 12 seconds.
- Imprisonment Devices Stun enemies in its AoE for 2 seconds.
- Pulse Defense Modules on Multivariate Cooperation: Defence Protocols Stuns enemies in its lower part's AoE for 7 seconds.
- In Integrated Strategies, the
"Eventide Terror" (Phantom & Crimson Solitaire)/Little Gran Faro (Mizuki & Caerula Arbor onward) Collectible Stuns all enemies present for 5 seconds when one enters a Protection Objective.
- Once a hostile Gelato Stop's HP reaches 0, it releases a wave that Stuns enemies in its range for 5 seconds.
- If Manfred is struck by the Londinium Secondary Defense Artillery, he will be Stunned for 8 seconds.
- Hands of the Saint Stun enemies that it comes in contact with for 1 second. If the Hand of the Saint - Patrol effect of the Little Handy's Housekeeping Assistant Module is selected, the Hands' Stun duration will be extended additively if they struck the same enemy multiple times.
- In Ideal City, the Self-Driving Cart Stuns enemies it collides with for 1 second, which can be extended to 2 seconds with
Crash Bumper or 3 seconds with
Assault Bumper.
- When the Materialist Antagonizer is defeated, it drops off Stitch Canvas who is Stunned for 30 seconds.
- When The Last Steam Knight's Pneumatic Pressurization expires, he will be Stunned for 5 seconds.
- In Caerula Arbor, if Saint Carmen/Saint Iberia is interrupted while reloading his handcannon, he will be Stunned for 10 seconds.
- In A Flurry to the Flame:
- Flash Grenades Stun enemies that are facing towards the impact point for 5 seconds.
- High-Voltage Shock Traps Stun enemies that comes over it for 8 seconds once armed.
- In Stationary Security Service, once the Aegirian Oscilloscope is upgraded with Ambush Circuit Chip, enemies blocked by Abyssal Hunters Operators will be Stunned as long as the Oscilloscope is present.
Against friendlies
Operators
Operator | Source | Range/target | Duration |
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![]() Spirit Burst |
Self | 10 seconds after Spirit Burst expires | |
![]() Homeland Protector |
5 seconds after Homeland Protector expires | ||
![]() High-Voltage Current |
After the skill expires
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![]() Earthen Tenacity | |||
![]() Genesis |
Only if Genesis fails (50% chance, all friendlies within range) □
□□□
□□■□□
□□□
□ |
5 seconds | |
Safe Landing | Self | 10 seconds after deployment | |
![]() Focus Overload |
10 seconds after Focus Overload expires | ||
![]() Iron Will |
5 seconds after Iron Will expires | ||
![]() Destiny |
After Destiny expires
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![]() Counter Arc |
5 seconds after Counter Arc expires | ||
![]() Willing Burden |
Overload duration (unless if the skill is deactivated before Overloaded) | ||
![]() Panoramic Overload |
All deployed Mobile Buggy Cams | 5 seconds after Panoramic Overload expires | |
![]() Bone Fracture |
Self | 10 seconds after Bone Fracture expires | |
![]() On-the-Fly Weapon Modding |
Self and the affected Sniper when attacking |
|
Enemies
Enemy | Method | Duration |
---|---|---|
Every third attacks | 7 seconds | |
Every fourth attacks | ||
Every third attacks | 5 seconds | |
15 seconds | ||
Explosion when HP reaches 0 for the first time (radius 3 tiles) |
| |
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 | |
Every fourth attacks (up to 2 targets) | 3 seconds | |
Exsanguination (global range, 10 [after spawning]/15 seconds cooldown) | 10 seconds | |
Crimson Formation (attached onto the target in each attack) | 10 seconds or until the Formation is destroyed | |
Attack when blocked (radius 0.8/1.2 [second phase] tiles) | 6 seconds | |
Every fourth attacks; will never target Stunned friendlies unless if no other targets are available | 20 seconds | |
Interference attack, inflicted every 5 seconds (radius 3×3 tiles) | 3 seconds | |
Overload attacks | 2 seconds each | |
Trap trigger | 10 seconds | |
Shattered Vision on the second phase; only affects units on ranged tiles | 15 seconds | |
Attack | 4 seconds | |
Explosion when the power armor is destroyed (radius 1.5 tiles) | 10 seconds | |
Every third attacks | 15 seconds | |
Surge of Nature (40/60 seconds cooldown) | 10 seconds | |
|
6 seconds | |
AoE attack every fourth attacks | 4 seconds | |
Blood Surge (when defeated in the first phase and after using Sunken Death on the second phase) | 5 seconds | |
Attack while the melancholic variation is in effect | 10 seconds | |
Every third attacks | 9 seconds | |
Can attack (affects the target and others in the adjacent tiles) | 6 seconds | |
While on top of a friendly unit | Until the Aged Mead leaves the map |
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 |
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![]() Assault Tactics |
Ash's attacks while Assault Tactics is active deals more damage against Stunned enemies:
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Shielded Shooting | Blitz attacks Stunned enemies over the others and his ATK is increased against Stunned enemies, which is multiplied while ![]()
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Do or Die | The ATK increase is enhanced when Hoederer attacks Stunned enemies.
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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. | |
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" 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.