Ammunition

“	Skill activation grants {amount} ammo and the skill ends when all ammo are used (Can manually deactivate skill).	”
	—Description of most Operator skills that use the Ammunition mechanic

Ammunition is a skill mechanic in Arknights.

Overview

Skills that use the Ammunition mechanic does not end after a period of time. Instead, as soon as the skill is activated, it receives a number of ammo that is expended in each attack; the skill will only end once all ammo is depleted and can also be manually deactivated in order to expedite its reactivation.

From the Near Light update, skills that use the Ammunition mechanic uses a special meter that displays its ammo count more accurately as orange bars; before this, the skill's meter is the same as the others.

Operator	Skill	Ammo count	Effect
Ash	Assault Tactics	31	Reduces the attack interval by 80% and increases the damage dealt against Stunned enemies: L1: 150% L2: 160% L3: 170% L4: 180% L5: 190% L6: 200% L7: 210% M1: 220% M2: 230% M3: 250%
Aurora	Artificial Snowfall	9	Inflicts Cold for 2.5 seconds and increases the damage dealt against Frozen targets: L1-L3: 200% L4-L6: 250% L7: 300% M1: 310% M2: 320% M3: 330%
Cantabile	Specular Reflection	L1-L3: 13 L4-L6: 14 L7: 15 M1: 16 M2: 17 M3: 18	Increases ATK and ASPD, and camouflages Cantabile. L1: +10%/+10 L2: +13%/+14 L3: +16%/+18 L4: +19%/+22 L5: +22%/+26 L6: +25%/+30 L7: +28%/+34 M1: +32%/+38 M2: +36%/+44 M3: +40%/+50
Ch'en the Holungday	High-Pressure Splash	4	Increases ATK and applies the trait to all enemies in range instead of those in the frontal row: L1: +40% L2: +45% L3: +50% L4: +55% L5: +60% L6: +65% L7: +70% M1: +80% M2: +90% M3: +100%
	"Night of Violet"	8 (20 when Overcharged)	Increases ATK and creates a goo that reduces the DEF and speed of enemies (lasting 5 seconds). L1: +35% ATK, -50 DEF, -10% speed L2: +40% ATK, -50 DEF, -10% speed L3: +45% ATK, -50 DEF, -10% speed L4: +50% ATK, -100 DEF, -20% speed L5: +55% ATK, -100 DEF, -20% speed L6: +60% ATK, -100 DEF, -20% speed L7: +65% ATK, -150 DEF, -30% speed M1: +70% ATK, -150 DEF, -30% speed M2: +75% ATK, -170 DEF, -35% speed M3: +80% ATK, -170 DEF, -35% speed
	"Holiday Storm"	32 (each attack consumes 2 ammo)	Attacks twice with extended attack range, increased ATK, applies the trait to all enemies in range instead of those in the frontal row, and creates a goo that reduces the DEF and speed of enemies (lasting 5 seconds). 　　　□　 　　□□　 　■□□　 　　□□　 　　　□　 L1: +40% ATK, -100 DEF, -20% speed L2: +45% ATK, -100 DEF, -20% speed L3: +50% ATK, -100 DEF, -20% speed L4: +55% ATK, -150 DEF, -30% speed L5: +60% ATK, -150 DEF, -30% speed L6: +65% ATK, -150 DEF, -30% speed L7: +70% ATK, -200 DEF, -40% speed M1: +80% ATK, -220 DEF, -45% speed M2: +90% ATK, -220 DEF, -45% speed M3: +100% ATK, -220 DEF, -45% speed
Horn	Tempest Command	10	Increases the damage dealt; also deals an additional instance of Arts damage when Overloaded. L1: 130%/30% L2: 140%/30% L3: 150%/30% L4: 160%/35% L5: 170%/35% L6: 180%/35% L7: 190%/40% M1: 200%/50% M2: 220%/50% M3: 240%/60%
Lumen	This Lantern Undying	L1-L2: 3 L3-L4: 4 L5-L6: 5 L7-M1: 6 M2: 7 M3: 8	Increases ATK and ASPD, and makes Lumen heal friendlies with Negative Statuses over the others. The ammo is only expended when healing friendlies with Negative Statuses, which increases the amount of HP restored and cures all Negative Statuses on them. L1: +20% ATK, +10 ASPD, 120% healing L2: +23% ATK, +10 ASPD, 125% healing L3: +26% ATK, +10 ASPD, 130% healing L4: +30% ATK, +20 ASPD, 135% healing L5: +33% ATK, +20 ASPD, 140% healing L6: +36% ATK, +20 ASPD, 145% healing L7: +40% ATK, +20 ASPD, 150% healing M1: +45% ATK, +30 ASPD, 170% healing M2: +50% ATK, +30 ASPD, 185% healing M3: +55% ATK, +30 ASPD, 200% healing
Toddifons	Portable Fortcracker Arrows	10	Increases the damage dealt but increases attack interval by 0.3 seconds; the arrows explode after a delay of 1.5 seconds to deal splash Physical damage. L1: 150%/60% L2: 160%/60% L3: 170%/60% L4: 180%/65% L5: 190%/65% L6: 200%/65% L7: 210%/70% M1: 220%/70% M2: 230%/70% M3: 240%/80%

Interactions

Operator	Skill/talent	Interaction
Ch'en the Holungday	Frugality	Gives the Holungday a chance to have her attacks not expending the skill's ammo. E1: 15% E2: 20% P5: +2% Other Snipers with skills that use the Ammunition mechanic have a 20% chance to have their attacks not expending the skill's ammo while the Holungday is deployed.