The Industrial Water Cannon, also known as Reserve Water Cannon or simply Water Cannon, is a summoned unit in Arknights, deployed through Weedy's first talent of the same name.
The Water Cannon is basically that: a portable "cannon" firing compressed water from a short range capable of knocking back enemies hit in each shot. It can be deployed on both melee and ranged tiles, is invulnerable, does not get targeted by enemies, and are not counted towards the Unit Limit, but does not block enemies (if deployed on melee tiles) and will self-destruct after a period of time.
If Weedy uses her third skill, Liquid Nitrogen Cannon, and the Water Cannon is adjacent to her, it will fire its own instance of Liquid Nitrogen Cannon at the same time; should Weedy and the Water Cannon are deployed with their ranges overlapping each other, the Liquid Nitrogen Cannon's effectiveness is essentially doubled, even more so with Weedy's Upgraded Water Cannon which raises the Water Cannon's shift force and makes Weedy periodically generate SP if the Water Cannon is adjacent to her.
Attacks push the target back slightly; lasts 20 seconds after deployment
Addendum
The push has a force of 0.
Upgraded Water Cannon
Normal attacks and skills have +1 shift level; restores 1 SP per 3 seconds to Weedy if located within 4 tiles of her
Skill
Liquid Nitrogen Cannon
Auto
Level
Effect
Immediately fires a compressed liquid nitrogen cannon, dealing 260% Arts damage in an area and pushing enemies awaymoderately; For 4 seconds, enemies hit by this ability take True Damage proportional to distance traveled; If the Reserve Water Cannon is located within 4 tiles, it will also activate this ability
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Immediately fires a compressed liquid nitrogen cannon, dealing 270% Arts damage in an area and pushing enemies away moderately; For 4 seconds, enemies hit by this ability take True Damage proportional to distance traveled; If the Reserve Water Cannon is located within 4 tiles, it will also activate this ability
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Immediately fires a compressed liquid nitrogen cannon, dealing 280% Arts damage in an area and pushing enemies away moderately; For 4 seconds, enemies hit by this ability take True Damage proportional to distance traveled; If the Reserve Water Cannon is located within 4 tiles, it will also activate this ability
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Immediately fires a compressed liquid nitrogen cannon, dealing 290% Arts damage in an area and pushing enemies away moderately; For 5 seconds, enemies hit by this ability take True Damage proportional to distance traveled; If the Reserve Water Cannon is located within 4 tiles, it will also activate this ability
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Immediately fires a compressed liquid nitrogen cannon, dealing 300% Arts damage in an area and pushing enemies away moderately; For 5 seconds, enemies hit by this ability take True Damage proportional to distance traveled; If the Reserve Water Cannon is located within 4 tiles, it will also activate this ability
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Immediately fires a compressed liquid nitrogen cannon, dealing 310% Arts damage in an area and pushing enemies away moderately; For 5 seconds, enemies hit by this ability take True Damage proportional to distance traveled; If the Reserve Water Cannon is located within 4 tiles, it will also activate this ability
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Immediately fires a compressed liquid nitrogen cannon, dealing 320% Arts damage in an area and pushing enemies away significantly; For 6 seconds, enemies hit by this ability take True Damage proportional to distance traveled; If the Reserve Water Cannon is located within 4 tiles, it will also activate this ability
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Immediately fires a compressed liquid nitrogen cannon, dealing 330% Arts damage in an area and pushing enemies away significantly; For 6 seconds, enemies hit by this ability take True Damage proportional to distance traveled; If the Reserve Water Cannon is located within 4 tiles, it will also activate this ability
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Immediately fires a compressed liquid nitrogen cannon, dealing 340% Arts damage in an area and pushing enemies away significantly; For 7 seconds, enemies hit by this ability take True Damage proportional to distance traveled; If the Reserve Water Cannon is located within 4 tiles, it will also activate this ability
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Immediately fires a compressed liquid nitrogen cannon, dealing 350% Arts damage in an area and pushing enemies away greatly; For 8 seconds, enemies hit by this ability take True Damage proportional to distance traveled; If the Reserve Water Cannon is located within 4 tiles, it will also activate this ability
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Addendum
Requires Weedy to use her Liquid Nitrogen Cannon skill as well to be available, and the level matches with that of Weedy's counterpart (including Mastery training).
The Liquid Nitrogen Cannon projectile can hit aerial enemies and has an area-of-effect of 1.2 tiles.
Liquid Nitrogen Cannon's push has a force of 1/1/1/1/1/1/2/2/2/3.
The Liquid Nitrogen Cannon's distance-based True damage is dealt at a rate of 1200 per 1 tile; for more information, see Debuff#Distance-based damage.