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Vector Breakthrough
- This article is about the game mode. For the event, see Vector Breakthrough (event).
Vector Breakthrough, officially abbreviated VEC, is a seasonal game mode in Arknights.
Introduction[edit]
Combining the elements of Interlocking Competition Hymnoi Wisdom and Design of Strife, Vector Breakthrough has the player command their Operators through a series of tests (operations) that do not consume 
Sanity and can be restarted without having to quit them. A notable element is the presence of a Breakthrough Trainer, a powerful boss enemy modeled after a Rhodes Island Elite Operator who will appear multiple times in the tests at escalating levels of strength.
Seasons[edit]
| Event | Release dates | ||
|---|---|---|---|
| CN | Global | TW
| |
|
2024/09/27 | 2025/03/25 | 2025/07/11
|
|
2025/05/20 | 2025/10/30 | TBA
|
Overview[edit]
The player will only have a single Life Point in all V.B. operations, so all enemies will have to be defeated.
Kernel Breakthrough[edit]
Kernel Breakthrough is divided into several operations that must be cleared in order. As K.B. operations are cleared, additional handicaps will be added to subsequent operations, making things more difficult. The Breakthrough Trainer will be encountered a total of three times spaced evenly among the Kernel Breakthrough operations, with each subsequent appearance increasing their power and giving them new abilities.
Clearing K.B. operations awards Breakthrough Milestone currency, with more being awarded on the first clear.
Special Front[edit]
Special Front is a series of operations that can be attempted when desired. Each S.F. operation has a set number of maximum Operators that can be included to the squad and a Combat Supply that is applied to K.B. operations once cleared, which augments friendly units and make things easier. However, the Operators used to clear the S.F. operation will be "garrisoned" and cannot be used in other operations until they are "retreated" from the S.F operation, which will disable the respective Combat Supply until another Operator is garrisoned.
Since Vector Breakthrough Inorganic Matters, the squad size in S.F. operations can be up to 3, and up to 4 Combat Supplies can be equipped at a time. Some Combat Supplies additionally may be mutually exclusive with others, or can only be unlocked if a prerequisite Combat Supply is currently being garrisoned.
Clearing S.F operations for the first time will award Breakthrough Milestone currency.
All-Out Effort[edit]
Introduced in Vector Breakthrough Inorganic Matters, All-Out Effort is a series of highly difficult operations that unlock later in the event, being recommended to attempt after obtaining a large number of Combat Supplies. In addition to having highly difficult enemy lineups and handicaps comparable to the last stages of Kernel Breakthrough, multiple Breakthrough Trainers across different seasons will appear at their maximum strength.
Clearing All-Out Effort operations awards Breakthrough Milestone currency, with more being awarded on the first clear.