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RO Codex Adventurer's Index RO Codex ROM Eternal Love

Improved Acid Demonstration

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Improved Acid Demonstration
Active
Physical
Attack
20 levels
Improved Acid Demonstration

Deals ((Atk+M.Atk) x 360% + target's VIT) Dmg to an enemy Has a 1% chance to break enemy’s weapon and armor This skill ignores Flee, [Auto Guard] and [Sword Parry]. [Acid Terror] skill level affects VIT factor

Skill type
Attack
Target
Enemy
Range
6 m
Cast time
2 s
Cast delay
2 s
SP cost
18
Damage
360%
Available to
Jobs that teach this skill.
1 jobs
Unlock requirements
Skills required before the first level can be learned.
Level comparison
Start with the max-level result, then compare exact client values and learning costs at every lower level.
Levels 1–20
Metric
Max level Level 20
Level 19 Level 19
Level 18 Level 18
Level 17 Level 17
Level 16 Level 16
Level 15 Level 15
Level 14 Level 14
Level 13 Level 13
Level 12 Level 12
Level 11 Level 11
Level 10 Level 10
Level 9 Level 9
Level 8 Level 8
Level 7 Level 7
Level 6 Level 6
Level 5 Level 5
Level 4 Level 4
Level 3 Level 3
Level 2 Level 2
Level 1 Level 1
Damage
1,380%
1,350%
1,320%
1,290%
1,260%
1,230%
1,200%
1,170%
1,140%
1,110%
1,080%
1,000%
920.00%
840%
760%
680%
600%
520%
440.00%
360%
Hits
5
5
5
5
5
5
5
5
5
5
5
5
4
4
3
3
2
2
- -
SP cost
50
50
50
50
48
46
44
42
40
38
36
34
32
30
28
26
24
22
20
18
Cast time
2 s
2 s
2 s
2 s
2 s
2 s
2 s
2 s
2 s
2 s
2 s
2 s
2 s
2 s
2 s
2 s
2 s
2 s
2 s
2 s
Cooldown - - - - - - - - - - - - - - - - - - - -
Cast delay
2 s
2 s
2 s
2 s
2 s
2 s
2 s
2 s
2 s
2 s
2 s
2 s
2 s
2 s
2 s
2 s
2 s
2 s
2 s
2 s
Range
6 m
6 m
6 m
6 m
6 m
6 m
6 m
6 m
6 m
6 m
6 m
6 m
6 m
6 m
6 m
6 m
6 m
6 m
6 m
6 m
Skill points
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Applied effects
Enemy
Duration: 60 s
Enemy
Duration: 60 s
Enemy
Physical Damage Reduction: -1.50% Physical Defense: -2%
Enemy
Chance: 100% Triggered skill: Fire Expansion Triggered range: 6 m Triggered cast delay: 2 s
Enemy
Status: Improved Acid Demonstration effect
Enemy
Skill Damage Reduction: -10% Physical Damage Reduction: -5%
Enemy
Duration: 60 s
Enemy
Duration: 60 s
Enemy
Physical Damage Reduction: -1.50% Physical Defense: -2%
Enemy
Chance: 100% Triggered skill: Fire Expansion Triggered range: 6 m Triggered cast delay: 2 s
Enemy
Status: Improved Acid Demonstration effect
Enemy
Skill Damage Reduction: -10% Physical Damage Reduction: -5%
Enemy
Duration: 60 s
Enemy
Duration: 60 s
Enemy
Physical Damage Reduction: -1.50% Physical Defense: -2%
Enemy
Chance: 100% Triggered skill: Fire Expansion Triggered range: 6 m Triggered cast delay: 2 s
Enemy
Status: Improved Acid Demonstration effect
Enemy
Skill Damage Reduction: -10% Physical Damage Reduction: -5%
Enemy
Duration: 60 s
Enemy
Duration: 60 s
Enemy
Physical Damage Reduction: -1.50% Physical Defense: -2%
Enemy
Chance: 100% Triggered skill: Fire Expansion Triggered range: 6 m Triggered cast delay: 2 s
Enemy
Status: Improved Acid Demonstration effect
Enemy
Skill Damage Reduction: -10% Physical Damage Reduction: -5%
Enemy
Duration: 60 s
Enemy
Duration: 60 s
Enemy
Physical Damage Reduction: -1.50% Physical Defense: -2%
Enemy
Chance: 100% Triggered skill: Fire Expansion Triggered range: 6 m Triggered cast delay: 2 s
Enemy
Status: Improved Acid Demonstration effect
Enemy
Skill Damage Reduction: -10% Physical Damage Reduction: -5%
Enemy
Duration: 60 s
Enemy
Duration: 60 s
Enemy
Physical Damage Reduction: -1.50% Physical Defense: -2%
Enemy
Chance: 100% Triggered skill: Fire Expansion Triggered range: 6 m Triggered cast delay: 2 s
Enemy
Status: Improved Acid Demonstration effect
Enemy
Skill Damage Reduction: -10% Physical Damage Reduction: -5%
Enemy
Duration: 60 s
Enemy
Duration: 60 s
Enemy
Physical Damage Reduction: -1.50% Physical Defense: -2%
Enemy
Chance: 100% Triggered skill: Fire Expansion Triggered range: 6 m Triggered cast delay: 2 s
Enemy
Status: Improved Acid Demonstration effect
Enemy
Skill Damage Reduction: -10% Physical Damage Reduction: -5%
Enemy
Duration: 60 s
Enemy
Duration: 60 s
Enemy
Physical Damage Reduction: -1.50% Physical Defense: -2%
Enemy
Chance: 100% Triggered skill: Fire Expansion Triggered range: 6 m Triggered cast delay: 2 s
Enemy
Status: Improved Acid Demonstration effect
Enemy
Skill Damage Reduction: -10% Physical Damage Reduction: -5%
Enemy
Duration: 60 s
Enemy
Duration: 60 s
Enemy
Physical Damage Reduction: -1.50% Physical Defense: -2%
Enemy
Chance: 100% Triggered skill: Fire Expansion Triggered range: 6 m Triggered cast delay: 2 s
Enemy
Status: Improved Acid Demonstration effect
Enemy
Skill Damage Reduction: -10% Physical Damage Reduction: -5%
Enemy
Duration: 60 s
Enemy
Duration: 60 s
Enemy
Physical Damage Reduction: -1.50% Physical Defense: -2%
Enemy
Chance: 100% Triggered skill: Fire Expansion Triggered range: 6 m Triggered cast delay: 2 s
Enemy
Status: Improved Acid Demonstration effect
Enemy
Skill Damage Reduction: -10% Physical Damage Reduction: -5%
Enemy
Duration: 60 s
Enemy
Duration: 60 s
Enemy
Physical Damage Reduction: -1.50% Physical Defense: -2%
Enemy
Chance: 100% Triggered skill: Fire Expansion Triggered range: 6 m Triggered cast delay: 2 s
Enemy
Status: Improved Acid Demonstration effect
Enemy
Skill Damage Reduction: -10% Physical Damage Reduction: -5%
Enemy
Duration: 60 s
Enemy
Duration: 60 s
Enemy
Physical Damage Reduction: -1.50% Physical Defense: -2%
Enemy
Chance: 100% Triggered skill: Fire Expansion Triggered range: 6 m Triggered cast delay: 2 s
Enemy
Status: Improved Acid Demonstration effect
Enemy
Skill Damage Reduction: -10% Physical Damage Reduction: -5%
Enemy
Duration: 60 s
Enemy
Duration: 60 s
Enemy
Physical Damage Reduction: -1.50% Physical Defense: -2%
Enemy
Chance: 100% Triggered skill: Fire Expansion Triggered range: 6 m Triggered cast delay: 2 s
Enemy
Status: Improved Acid Demonstration effect
Enemy
Skill Damage Reduction: -10% Physical Damage Reduction: -5%
Enemy
Duration: 60 s
Enemy
Duration: 60 s
Enemy
Physical Damage Reduction: -1.50% Physical Defense: -2%
Enemy
Chance: 100% Triggered skill: Fire Expansion Triggered range: 6 m Triggered cast delay: 2 s
Enemy
Status: Improved Acid Demonstration effect
Enemy
Skill Damage Reduction: -10% Physical Damage Reduction: -5%
Enemy
Duration: 60 s
Enemy
Duration: 60 s
Enemy
Physical Damage Reduction: -1.50% Physical Defense: -2%
Enemy
Chance: 100% Triggered skill: Fire Expansion Triggered range: 6 m Triggered cast delay: 2 s
Enemy
Status: Improved Acid Demonstration effect
Enemy
Skill Damage Reduction: -10% Physical Damage Reduction: -5%
Enemy
Duration: 60 s
Enemy
Duration: 60 s
Enemy
Physical Damage Reduction: -1.50% Physical Defense: -2%
Enemy
Chance: 100% Triggered skill: Fire Expansion Triggered range: 6 m Triggered cast delay: 2 s
Enemy
Status: Improved Acid Demonstration effect
Enemy
Skill Damage Reduction: -10% Physical Damage Reduction: -5%
Enemy
Duration: 60 s
Enemy
Duration: 60 s
Enemy
Physical Damage Reduction: -1.50% Physical Defense: -2%
Enemy
Chance: 100% Triggered skill: Fire Expansion Triggered range: 6 m Triggered cast delay: 2 s
Enemy
Status: Improved Acid Demonstration effect
Enemy
Skill Damage Reduction: -10% Physical Damage Reduction: -5%
Enemy
Duration: 60 s
Enemy
Duration: 60 s
Enemy
Physical Damage Reduction: -1.50% Physical Defense: -2%
Enemy
Chance: 100% Triggered skill: Fire Expansion Triggered range: 6 m Triggered cast delay: 2 s
Enemy
Status: Improved Acid Demonstration effect
Enemy
Skill Damage Reduction: -10% Physical Damage Reduction: -5%
Enemy
Duration: 60 s
Enemy
Duration: 60 s
Enemy
Physical Damage Reduction: -1.50% Physical Defense: -2%
Enemy
Chance: 100% Triggered skill: Fire Expansion Triggered range: 6 m Triggered cast delay: 2 s
Enemy
Status: Improved Acid Demonstration effect
Enemy
Skill Damage Reduction: -10% Physical Damage Reduction: -5%
Enemy
Duration: 60 s
Enemy
Duration: 60 s
Enemy
Physical Damage Reduction: -1.50% Physical Defense: -2%
Enemy
Chance: 100% Triggered skill: Fire Expansion Triggered range: 6 m Triggered cast delay: 2 s
Enemy
Status: Improved Acid Demonstration effect
Enemy
Skill Damage Reduction: -10% Physical Damage Reduction: -5%
Description Deals ((Atk+M.Atk) x 1380% + target's VIT) Dmg to an enemy Has a 20% chance to break enemy’s weapon and armor This skill ignores Flee, [Auto Guard] and [Sword Parry]. [Acid Terror] skill level affects VIT factor Deals ((Atk+M.Atk) x 1350% + target's VIT) Dmg to an enemy Has a 19% chance to break enemy’s weapon and armor This skill ignores Flee, [Auto Guard] and [Sword Parry]. [Acid Terror] skill level affects VIT factor Deals ((Atk+M.Atk) x 1320% + target's VIT) Dmg to an enemy Has a 18% chance to break enemy’s weapon and armor This skill ignores Flee, [Auto Guard] and [Sword Parry]. [Acid Terror] skill level affects VIT factor Deals ((Atk+M.Atk) x 1290% + target's VIT) Dmg to an enemy Has a 17% chance to break enemy’s weapon and armor This skill ignores Flee, [Auto Guard] and [Sword Parry]. [Acid Terror] skill level affects VIT factor Deals ((Atk+M.Atk) x 1260% + target's VIT) Dmg to an enemy Has a 16% chance to break enemy’s weapon and armor This skill ignores Flee, [Auto Guard] and [Sword Parry]. [Acid Terror] skill level affects VIT factor Deals ((Atk+M.Atk) x 1230% + target's VIT) Dmg to an enemy Has a 15% chance to break enemy’s weapon and armor This skill ignores Flee, [Auto Guard] and [Sword Parry]. [Acid Terror] skill level affects VIT factor Deals ((Atk+M.Atk) x 1200% + target's VIT) Dmg to an enemy Has a 14% chance to break enemy’s weapon and armor This skill ignores Flee, [Auto Guard] and [Sword Parry]. [Acid Terror] skill level affects VIT factor Deals ((Atk+M.Atk) x 1170% + target's VIT) Dmg to an enemy Has a 13% chance to break enemy’s weapon and armor This skill ignores Flee, [Auto Guard] and [Sword Parry]. [Acid Terror] skill level affects VIT factor Deals ((Atk+M.Atk) x 1140% + target's VIT) Dmg to an enemy Has a 12% chance to break enemy’s weapon and armor This skill ignores Flee, [Auto Guard] and [Sword Parry]. [Acid Terror] skill level affects VIT factor Deals ((Atk+M.Atk) x 1110% + target's VIT) Dmg to an enemy Has a 11% chance to break enemy’s weapon and armor This skill ignores Flee, [Auto Guard] and [Sword Parry]. [Acid Terror] skill level affects VIT factor Deals ((Atk+M.Atk) x 1080% + target's VIT) Dmg to an enemy Has a 10% chance to break enemy’s weapon and armor This skill ignores Flee, [Auto Guard] and [Sword Parry]. [Acid Terror] skill level affects VIT factor Deals ((Atk+M.Atk) x 1000% + target's VIT) Dmg to an enemy Has a 9% chance to break enemy’s weapon and armor This skill ignores Flee, [Auto Guard] and [Sword Parry]. [Acid Terror] skill level affects VIT factor Deals ((Atk+M.Atk) x 920% + target's VIT) Dmg to an enemy Has a 8% chance to break enemy’s weapon and armor This skill ignores Flee, [Auto Guard] and [Sword Parry]. [Acid Terror] skill level affects VIT factor Deals ((Atk+M.Atk) x 840% + target's VIT) Dmg to an enemy Has a 7% chance to break enemy’s weapon and armor This skill ignores Flee, [Auto Guard] and [Sword Parry]. [Acid Terror] skill level affects VIT factor Deals ((Atk+M.Atk) x 760% + target's VIT) Dmg to an enemy Has a 6% chance to break enemy’s weapon and armor This skill ignores Flee, [Auto Guard] and [Sword Parry]. [Acid Terror] skill level affects VIT factor Deals ((Atk+M.Atk) x 680% + target's VIT) Dmg to an enemy Has a 5% chance to break enemy’s weapon and armor This skill ignores Flee, [Auto Guard] and [Sword Parry]. [Acid Terror] skill level affects VIT factor Deals ((Atk+M.Atk) x 600% + target's VIT) Dmg to an enemy Has a 4% chance to break enemy’s weapon and armor This skill ignores Flee, [Auto Guard] and [Sword Parry]. [Acid Terror] skill level affects VIT factor Deals ((Atk+M.Atk) x 520% + target's VIT) Dmg to an enemy Has a 3% chance to break enemy’s weapon and armor This skill ignores Flee, [Auto Guard] and [Sword Parry]. [Acid Terror] skill level affects VIT factor Deals ((Atk+M.Atk) x 440% + target's VIT) Dmg to an enemy Has a 2% chance to break enemy’s weapon and armor This skill ignores Flee, [Auto Guard] and [Sword Parry]. [Acid Terror] skill level affects VIT factor Deals ((Atk+M.Atk) x 360% + target's VIT) Dmg to an enemy Has a 1% chance to break enemy’s weapon and armor This skill ignores Flee, [Auto Guard] and [Sword Parry]. [Acid Terror] skill level affects VIT factor
Applied effects
Buffs and stat changes applied by this skill at maximum level (20).

Improved Acid Demonstration destroys weapons

Enemy
Applied change
Break Equip
Duration
60 s

Improved Acid Demonstration destroys armors

Enemy
Applied change
Break Equip
Duration
60 s

Chemical Etching

DMG Reduction down

Enemy
Applied change
Physical Damage Reduction
-1.50%
Formula: Configured client value -1.50%
Physical Defense
-2%
Formula: Configured client value -2%

Trigger Fire Expansion

Enemy
Applied change
Triggers skill
Chance
100%
Triggered skill
Fire Expansion
Triggered range
6 m
Triggered cast delay
2 s

Improved Acid Demonstration effect

Enemy
Applied change
Applied Buff
Status
Improved Acid Demonstration effect

DMG Reduc. and Skill DMG Reduc. Reduced

DMG Reduc. and Skill DMG Reduc. Reduced

Enemy
Applied change
Skill Damage Reduction
-10%
Physical Damage Reduction
-5%
How to compare skill levels
Compare damage, hits, SP, timing, requirements, and linked buffs at the same level. A new hit, target scope, or condition can matter more than the largest percentage increase. Read the related player guide