
2026-09-28 14:50:28

Arknights Critical Phase Transition is the celebration event accompanying the release of Episode 17 and introduces a major limited headhunting banner featuring two highly anticipated 6★ Operators: Kal'tsit·Esperanta and Closure.
The event is scheduled as a major celebration update, with Global release information currently based on future content planning. For players preparing their Orundum and Headhunting Permits, understanding the strengths and roles of these two 6★ Operators is essential.
If you want to secure both new Operators efficiently, preparing enough resources in advance or using reliable Arknights top-up services such as TOPUPlive can help you top up Originium at 12% off.
Critical Phase Transition celebrates the arrival of Arknights Episode 17 and features a special Celebration headhunting banner.
The highlight of this banner is the debut of Kal'tsit·Esperanta, a limited 6★ Medic Operator, alongside Closure, a new 6★ Tactician Vanguard.
Operator | Rarity | Class | Branch |
|---|---|---|---|
Kal'tsit·Esperanta |
6★ |
Medic |
Watchman |
Closure |
6★ |
Vanguard |
Tactician |
Among the two Operators, Kal'tsit·Esperanta is the main attraction because of her limited status, meaning players will have fewer opportunities to obtain her compared with regular Operators.

Kal'tsit·Esperanta is an alternate version of the original Kal'tsit and appears as a new 6★ Watchman Medic Operator. Unlike traditional Medics, her kit focuses on flexible battlefield support, unique positioning mechanics, and providing additional tactical options during difficult stages.
Her design continues Kal'tsit's identity as one of Rhodes Island's most important figures while introducing a completely different combat style compared with her original version.
Kal'tsit·Esperanta's gameplay revolves around her ability to provide healing support while interacting with the unique "Take Off" mechanic. Her trait allows her to restore allied HP and utilize special battlefield movement features.

The Watchman branch gives Kal'tsit·Esperanta a different approach from traditional Medic Operators. Instead of simply staying behind the frontline, she can adjust her position and support operators from unexpected angles.
This makes her valuable in stages featuring:
Kal'tsit·Esperanta is not designed only as a pure healer. Her skills combine:
This allows her to fit into advanced strategies where traditional healing solutions may struggle.
Limited Operators usually maintain high collection value because their availability is restricted. For veteran players who already have a strong roster, Kal'tsit·Esperanta provides another strategic option for high-difficulty content.
Players who enjoy:
will find more value from investing in her development.
Kal'tsit·Esperanta is a priority target for players who value limited Operators and want to expand their high-end support roster.
Player Type | Pull Recommendation |
|---|---|
New players | High value if resources allow |
Collection-focused players | Strong priority because she is limited |
Endgame players | Valuable for advanced strategies |
Players saving for future banners | Consider resource planning carefully |

Closure joins the Critical Phase Transition banner as a new 6★ Tactician Vanguard. As the chief engineer of Rhodes Island, Closure brings a unique battlefield style based on tactical deployment and mechanical support.
Compared with traditional Vanguard Operators, Tacticians focus more on controlling the battlefield through additional units and strategic positioning.
Closure's biggest feature is her ability to influence battles through tactical summons and battlefield management.
Her gameplay emphasizes:
This makes her suitable for players who enjoy controlling battles rather than relying only on direct damage output.
Closure can provide value in many squad compositions because Vanguard Operators usually appear early in battles and help establish the team's economy.
She can be especially useful in:
Since limited banners require careful Orundum management, players aiming for guaranteed recruitment should prepare enough resources before the event begins.
TOPUPlive provides Arknights top-up options to help players quickly obtain additional in-game currency when they need extra pulls.
Players should plan their resources before entering the banner.
Recommended priorities:
A balanced preparation plan can include:
Yes. Kal'tsit·Esperanta is introduced as a limited Celebration Operator during Critical Phase Transition, making her more difficult to obtain after the event ends.
Kal'tsit·Esperanta is a 6★ Medic Operator from the Watchman branch.
Closure is a strong 6★ Tactician Vanguard with unique tactical gameplay. Players who need more Vanguard options or enjoy strategic deployment mechanics can consider pulling for her.
The Critical Phase Transition banner brings two unique 6★ Operators with completely different strengths. Kal'tsit·Esperanta offers rare limited value and advanced support potential, while Closure provides tactical Vanguard gameplay for flexible squad building.
Players who want to prepare for this major Arknights update can follow TOPUPlive for more operator guides, banner analysis, and efficient top-up solutions.

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