Closure finally becomes a playable 6-star Operator in Arknights' 7th anniversary update, introduced alongside Episode 17's Critical Phase Transition event. As a Tactician Vanguard, she combines DP generation, ranged Physical damage, crowd control, and deployment support. Unlike conventional Vanguards, Closure can help deploy expensive Operators faster while contributing meaningful damage throughout a stage.

This Arknights Closure build guide covers her role, skill breakdown, Mastery priorities, Potentials, Module upgrades, recommended teams, gameplay strategies, and pull advice.

Raising Closure requires plenty of LMD, EXP Records, promotion materials, and Skill Summaries. If you manage multiple accounts or regularly farm stages, OSLink can help with multi-instance management and AFK farming. You can manage different game sessions, check Auto-Deploy progress, and collect resources more conveniently while preparing Closure and her teammates for harder content.

Arknights Closure Overview and Role

Closure is a ranged Tactician Vanguard specializing in DP Recovery, Physical DPS, and crowd control.

Her first talent allows her to deploy a Command Center on a Tactical Point. Unlike ordinary summons, the Command Center cannot attack, but it can block enemies and designate nearby allied Operators as Reinforcements.

Her second talent, Extreme Dispatch, lowers the minimum DP limit and increases the ATK of Rhodes Island Operators, giving her additional team utility.

Closure Skill Breakdown

Closure has three skills, but S2 and S3 are the main reasons to build her.

Skill 2 – Algorithm Expansion

S2 is Closure's strongest economy-focused option.

At Mastery 3, it immediately generates 10 DP, followed by another 15 DP over 30 seconds. During the skill, her Command Center gains additional DEF and Block Count, while Closure receives an ATK boost and can attack two enemies simultaneously.

Most importantly, Operators deployed within the Command Center's effect range receive a 40% DP cost refund.

This makes S2 excellent for quickly deploying expensive Operators such as Mudrock or Młynar. However, the refund only works within the Command Center's designated area, so positioning matters.

Skill 3 – Q.E.D.

S3 focuses on damage and crowd control while still providing DP.

At Mastery 3, Closure deals 250% ATK as Physical damage per attack, with a shorter attack interval and stacking Sluggish effects reaching up to 60%.

The number of enemies she can target gradually increases as she continues attacking, allowing her to deal with multiple enemies at once.

S3 is particularly effective against approaching enemy waves and is an excellent choice for general story progression.

Closure Skill Mastery Priority

Both S2 and S3 are worth mastering.

Choose S2M3 first if you want faster team deployment and better DP efficiency.

Choose S3M3 first if you want Closure to contribute substantial damage and crowd control.

Both are valuable, whereas S1 generally offers less value for the resources required to master it.

Closure Potential Recommendations

Closure functions well at Potential 1, so additional copies are optional.

P1 is sufficient for most players. Additional Potentials improve deployment flexibility and combat performance, but none are necessary for her main mechanics.

Investing in Elite 2, Masteries, and her Module generally provides better value than chasing duplicates.

Best Closure Module

Closure's recommended Module is TAC-X – Little Trophy For Herself.

Module Level 1 provides useful defensive support, while higher upgrades improve her teamwide Rhodes Island synergy.

If you frequently use Operators such as Logos, Blaze, or Amiya, Module Level 3 becomes particularly attractive.

For general progression, unlock Level 1 first and upgrade further when resources allow.

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Best Arknights Closure Team Compositions

Closure works particularly well with expensive Operators and Rhodes Island teammates.

The Rhodes Island Team benefits from Closure's faction-wide ATK bonus, while Kal'tsit Esperanta provides additional healing and protection.

For fast deployment, place Closure's Command Center where you intend to deploy your expensive frontline or damage dealers. Activating S2 before deploying them helps maximize DP savings.

Closure Gameplay Tips

Closure's gameplay revolves around choosing between DP generation and offensive crowd control.

With S2, deploy Closure early, position the Command Center near important deployment tiles, and activate the skill before deploying expensive teammates.

With S3, position the Command Center near busy enemy routes. Activate the skill as enemies approach to take advantage of its multi-target damage and slowing effects.

Do not overlook positioning. A poorly placed Command Center can significantly reduce the value of her S2 refunds and S3 coverage.

Pull Advice: Should You Pull Closure?

Closure is a strong pull for players who need a versatile Vanguard capable of generating DP while contributing meaningful damage.

She is especially valuable for fast-deployment strategies, Rhodes Island teams, and players who want an Operator capable of supporting both early and later stages of a battle.

Unlike Kal'tsit Esperanta, Closure is not a limited Operator, reducing the pressure to obtain her immediately.

Players with established Vanguards such as Ines can still benefit from Closure's unique deployment mechanics, although those saving for limited Operators may choose to prioritize their resources differently.

Overall, Closure is a powerful and flexible Vanguard with excellent long-term value. Prioritize S2 for deployment efficiency or S3 for offensive performance, and upgrade TAC-X to strengthen her support capabilities. Since developing Closure and her full squad requires substantial resources, OSLink can also help with multi-account management, Auto-Deploy farming, and routine resource collection, making it easier to prepare your Operators for Critical Phase Transition and future challenges.