Heavy Insulated Concrete

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The Heavy Insulated Concrete is a Haywire EC Unit in the Stationary Security Service game mode of Arknights, introduced in the mode's second rework and available in the Emergency Resupply mode of Security Missions listed below:

The player starts an operation with three Heavy Insulated Concretes which may either be in the Preparation Area or among the initial units on the Deployment Waiting Zone. So long as a Concrete is in the Deployment Waiting Zone, friendly units have their DP cost increased by 2, which stacks if multiple Concretes are present. The Concrete can be deployed for a grand 30 DP (that is affected by the DP increase of other Concretes, but not itself), which does nothing but to make the tile it was on unusable since the deployed Concrete is invulnerable and cannot be retreated; it does not obstruct enemies' movement, however.

Heavy Insulated Concretes can only be get rid of by using Reassignment Transmitters to remove them from the available units for the operation.


HP 3000
DEF 1000
Aggression level 0
DP cost 30
Redeployment time 5 seconds
Block count 0
Attack interval N/A


Heavy, Insulated
Auto Recovery
Effect Initial SP SP cost Duration
When in the Deployment Waiting Zone, other Operators and EC Units have DP +2. 0 25