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A list of Missions in Stationary Security Service.

Drill Mission[]

The Drill Mission acts as an introduction to S3 and must be cleared before the player can start Security Missions.

Rhodes Island Pharmaceuticals
Security Drill
Security Drill
This training program is designed for Operators and command personnel participating in the Stationary Security Service, familiarizing them with the nature of the mission, and the differences from standard combat missions.
TR-1
Training Ground #7
TR-2
Training Ground #9
TR-3
Training Ground #10

Security Missions[]

Two new Security Missions are introduced every one season, called Dispatch Cycle in-game, which is made up of four Reward Cycles (see Rewards) with the initial implementation counted as the first Dispatch Cycle.

For a list of Security Missions prior to S3's second rework, see Stationary Security Service/Missions/Former.

Dossoles Department of Security
Under-Construction Dossoles Plate
Under-Construction Dossoles Plate
One of Dossoles' under-construction plates was hijacked by a gang of barrens thugs while in transit. It is said that the leader of the gang wants to convert it into an underworld boxing arena. Ms. Candela has tasked you with first teaching the gang a lesson, then inviting their leader to Dossoles for a little chat. She trusts that her sincerity will reach the other party.
Introduced in: November 1, 2022 (CN); July 13, 2023 (Global)
Danger Level Effect: Enemies gain increased HP (25%), ATK (5%), and DEF (5%)
Emergency Resupply Conditions
All enemies take reduced damage (30%) while not being blocked;
Starting Danger Level is increased (+2)
Haywire EC Unit: Shoddy Flashbang Shoddy Flashbang ×3
Unique Directional EC Unit
Unique enemies
LT-1
The Swarming Masses
LT-2
Passing Down the Profit
LT-3
Industrial Improvement
LT-4
Bad Company
LT-5
Tipsy Trip
LT-6
A Piece of Steak
Inam
Acahuallan Jungle
Acahuallan Jungle
Recently, the flora of the Acahuallan Jungle has thrived a bit too well, to the point where it is troubling the locals. Apparently, everything can be traced back to a dangerous creature that is half-plant, half-Originium slug. Inam tasked Gavial with eliminating this creature, and she, ever busy with her medical work, subcontracted the job to Rhodes Island without a second thought.
Introduced in: November 1, 2022 (CN); July 13, 2023 (Global)
Danger Level Effect: Enemies gain increased HP (25%), ATK (5%), and Movement Speed (10%)
Emergency Resupply Conditions
When defeated, enemies deal 50% of their ATK as Physical damage to nearby friendly units;
Starting Danger Level is increased (+2)
Haywire EC Unit: Heavy Insulated Concrete Heavy Insulated Concrete ×3
Unique Directional EC Unit
Unique enemies
LT-1
Jungle Greetings
LT-2
Biodiversity
LT-3
Adaptation
LT-4
Glade
LT-5
Not Letting Go
LT-6
Man And Nature

This section pertains to a subject that is not yet released in the Global server of Arknights.
Unofficial English translations provided by GeniusGD.
Mama John's
Mama John's Newly Built Plate
Mama John's Newly Built Plate
A former employee of Mama John's appeared again after many years on the plot built by Mama John's to settle down their employees, fooled the construction team to make tons of weapons for her, and destroyed many facilities of her former company. Reporters had published the images shot near the plot, which resulted in the sales everywhere dropping significantly, and after thinking about the company's reputation, Mama John's commissioned Rhodes Island to deal with this problem.
In this mission, tiles have no melee/ranged restrictions
Introduced in: April 16, 2023 (CN)
Danger Level Effect: Enemies gain increased HP (25%), ATK (5%), and DEF (5%)
Emergency Resupply Conditions
Enemies gain increased ATK (50%) on the first attack;
Starting Danger Level is increased (+2)
Haywire EC Unit: Heavy Insulated Concrete Heavy Insulated Concrete ×3
Unique Directional EC Unit
Unique enemies
LT-1
Adhere to Difficulties
LT-2
Means of Wastelands
LT-3
Insensitive Move
LT-4
"Party" of Chaos
LT-5
Information Transfer
LT-6
Glory of Strength
Raythean Industries
Raythean Industries Testing Platform
Raythean Industries Testing Platform
Recently a large number of employees had taken their sick leave on one of Raythean Industries' sophisticated weapon testing platforms, and after checking, the manager determined that this was caused by the leak of industrial gas with low toxicity. When the platform is transferred to the wastelands for management, it was getting occupied by thugs, and when employees knew the reason, they want a compensation from working injuries, which put the manager into a terrible fix, hence they commissioned Rhodes Island to get the platform back, even better if we can deal with the gas leak as well.
<Poison Haze> Allied units lose HP over time, and the damage dealt increases as the Danger Level increases[note 1]
Introduced in: April 16, 2023 (CN)
Danger Level Effect: Enemies gain increased HP (25%), ATK (5%), and DEF (5%)
Emergency Resupply Conditions
Poison Haze damage increased[note 2];
Starting Danger Level is increased (+2)
Haywire EC Unit: Heavy Insulated Concrete Heavy Insulated Concrete ×3
Unique Directional EC Unit
Unique enemies
LT-1
Fatal Attraction
LT-2
Drunken Hammer
LT-3
For Survival
LT-4
Mixed Poison Gas
LT-5
Breed the Withered
LT-6
Suffocation

This section pertains to a subject that is not yet released in the Global server of Arknights.
Unofficial English translations provided by GeniusGD.
Alsterii Bellarorium
Alsterii Bellarorium Manufacture Platform
Alsterii Bellarorium Manufacture Platform
A dessert creating platform on Laterano outskirts has a sudden incident, and the cause is that to satisfy the increasing gelato request of Laterano, the technical department modified the production line which caused overproduction, and the operators took a sick leave due to overeating gelato. Now the auto production keeps spraying gelato everywhere, and delivery drones swarmed into the city, and pestered the crowd for sale. To save the reputation of gelato, Alsterii Bellarorium requested Rhodes Island to assist in dealing with this threat.
Introduced in: August 16, 2023 (CN)
Danger Level Effect: Enemies gain increased HP (25%), ATK (5%), and DEF (5%)
Emergency Resupply Conditions
Unblocked enemies take less Physical and Arts damage (4%) for every Danger Level;
Starting Danger Level is increased (+2)
Haywire EC Unit: Heavy Insulated Concrete Heavy Insulated Concrete ×3
Unique Directional EC Unit
Unique enemies
LT-1
Syrup Shell
LT-2
Sweet Party
LT-3
Cheese Lockdown
LT-4
Advanced Crafts
LT-5
Cream Splash
LT-6
Arriving Smile
Inquisition
The Abandoned Lighthouse
The Abandoned Lighthouse
An abandoned lighthouse in Iberia has attracted many adventurers, but no one has ever returned from there. Even though there's no abnormalities from the outside, the Inquisition suspected that this area had been corrupted by the sea, and hence locked it down and requested Rhodes Island to assist in this investigation.
Introduced in: August 16, 2023 (CN)
Danger Level Effect: Enemies gain increased HP (25%), ATK (5%), and DEF (5%)
Emergency Resupply Conditions
Enemies gain increased ASPD (4) for every Danger Level;
Starting Danger Level is increased (+2)
Haywire EC Unit: Shoddy Flashbang Shoddy Flashbang ×3
Unique Directional EC Unit
Unique enemies
LT-1
Saliva of the Sea
LT-2
Walking Dead
LT-3
Banishment
LT-4
Illusion
LT-5
The Rift
LT-6
Fallen Tides

Notes[]

  1. (1 + [Danger Level] + [stage of "Cancer"'s passive]) × 7
  2. (1 + [Danger Level] + [stage of "Cancer"'s passive]) × 8
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