Help us improve RO Codex
We use Google Analytics to understand site usage. Analytics stays off unless you accept.
RO Codex Adventurer's Index RO Codex ROM Eternal Love
Sign in Create account

Improved Acid Demonstration

Back to skills
Improved Acid Demonstration
Active
Physical
Attack
20 ranks
Improved Acid Demonstration
Deals ((AtkM.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%
Damage formula
How each damage event is calculated, including level scaling, defenses, penetration, criticals, target modifiers, and caps.
Coefficient only
Level 20 coefficient
1,380%
×13.80 per damage event · Lv. 1: 360% → Lv. 20: 1,380%
Damage events per cast
5 damage events
Each event runs through the formula separately.
Coefficient shown
This page shows the skill coefficient and damage-event count. It does not calculate the final result through defense, penetration, target modifiers, criticals, or caps.
Effect scaling
Maximum-level buff, passive, duration, chance, and attribute results with a resolved per-level formula.
Level 20

Source: Chemical Etching

Max-level result Physical Damage Reduction Chemical Etching Lv. 10
-15%
Scaling rule
-1.5% × Chemical Etching level + 0%
Affects
Enemy

Source: Chemical Etching

Max-level result Physical Defense Chemical Etching - Armor Breaking Lv. 7
-14%
Scaling rule
-2% × Chemical Etching - Armor Breaking level + 0%
Affects
Enemy
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
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: -15% -1.5% × Chemical Etching level + 0% Physical Defense: -14% -2% × Chemical Etching - Armor Breaking level + 0%
Enemy
Chance: 100% Triggered skill: Fire Expansion Triggered range: 6 m Triggered cast delay: 2 s
Enemy
Physical Damage Reduction: -5% Skill Damage Reduction: -10%
Enemy
Duration: 60 s
Enemy
Duration: 60 s
Enemy
Physical Damage Reduction: -15% -1.5% × Chemical Etching level + 0% Physical Defense: -14% -2% × Chemical Etching - Armor Breaking level + 0%
Enemy
Chance: 100% Triggered skill: Fire Expansion Triggered range: 6 m Triggered cast delay: 2 s
Enemy
Physical Damage Reduction: -5% Skill Damage Reduction: -10%
Enemy
Duration: 60 s
Enemy
Duration: 60 s
Enemy
Physical Damage Reduction: -15% -1.5% × Chemical Etching level + 0% Physical Defense: -14% -2% × Chemical Etching - Armor Breaking level + 0%
Enemy
Chance: 100% Triggered skill: Fire Expansion Triggered range: 6 m Triggered cast delay: 2 s
Enemy
Physical Damage Reduction: -5% Skill Damage Reduction: -10%
Enemy
Duration: 60 s
Enemy
Duration: 60 s
Enemy
Physical Damage Reduction: -15% -1.5% × Chemical Etching level + 0% Physical Defense: -14% -2% × Chemical Etching - Armor Breaking level + 0%
Enemy
Chance: 100% Triggered skill: Fire Expansion Triggered range: 6 m Triggered cast delay: 2 s
Enemy
Physical Damage Reduction: -5% Skill Damage Reduction: -10%
Enemy
Duration: 60 s
Enemy
Duration: 60 s
Enemy
Physical Damage Reduction: -15% -1.5% × Chemical Etching level + 0% Physical Defense: -14% -2% × Chemical Etching - Armor Breaking level + 0%
Enemy
Chance: 100% Triggered skill: Fire Expansion Triggered range: 6 m Triggered cast delay: 2 s
Enemy
Physical Damage Reduction: -5% Skill Damage Reduction: -10%
Enemy
Duration: 60 s
Enemy
Duration: 60 s
Enemy
Physical Damage Reduction: -15% -1.5% × Chemical Etching level + 0% Physical Defense: -14% -2% × Chemical Etching - Armor Breaking level + 0%
Enemy
Chance: 100% Triggered skill: Fire Expansion Triggered range: 6 m Triggered cast delay: 2 s
Enemy
Physical Damage Reduction: -5% Skill Damage Reduction: -10%
Enemy
Duration: 60 s
Enemy
Duration: 60 s
Enemy
Physical Damage Reduction: -15% -1.5% × Chemical Etching level + 0% Physical Defense: -14% -2% × Chemical Etching - Armor Breaking level + 0%
Enemy
Chance: 100% Triggered skill: Fire Expansion Triggered range: 6 m Triggered cast delay: 2 s
Enemy
Physical Damage Reduction: -5% Skill Damage Reduction: -10%
Enemy
Duration: 60 s
Enemy
Duration: 60 s
Enemy
Physical Damage Reduction: -15% -1.5% × Chemical Etching level + 0% Physical Defense: -14% -2% × Chemical Etching - Armor Breaking level + 0%
Enemy
Chance: 100% Triggered skill: Fire Expansion Triggered range: 6 m Triggered cast delay: 2 s
Enemy
Physical Damage Reduction: -5% Skill Damage Reduction: -10%
Enemy
Duration: 60 s
Enemy
Duration: 60 s
Enemy
Physical Damage Reduction: -15% -1.5% × Chemical Etching level + 0% Physical Defense: -14% -2% × Chemical Etching - Armor Breaking level + 0%
Enemy
Chance: 100% Triggered skill: Fire Expansion Triggered range: 6 m Triggered cast delay: 2 s
Enemy
Physical Damage Reduction: -5% Skill Damage Reduction: -10%
Enemy
Duration: 60 s
Enemy
Duration: 60 s
Enemy
Physical Damage Reduction: -15% -1.5% × Chemical Etching level + 0% Physical Defense: -14% -2% × Chemical Etching - Armor Breaking level + 0%
Enemy
Chance: 100% Triggered skill: Fire Expansion Triggered range: 6 m Triggered cast delay: 2 s
Enemy
Physical Damage Reduction: -5% Skill Damage Reduction: -10%
Enemy
Duration: 60 s
Enemy
Duration: 60 s
Enemy
Physical Damage Reduction: -15% -1.5% × Chemical Etching level + 0% Physical Defense: -14% -2% × Chemical Etching - Armor Breaking level + 0%
Enemy
Chance: 100% Triggered skill: Fire Expansion Triggered range: 6 m Triggered cast delay: 2 s
Enemy
Physical Damage Reduction: -5% Skill Damage Reduction: -10%
Enemy
Duration: 60 s
Enemy
Duration: 60 s
Enemy
Physical Damage Reduction: -15% -1.5% × Chemical Etching level + 0% Physical Defense: -14% -2% × Chemical Etching - Armor Breaking level + 0%
Enemy
Chance: 100% Triggered skill: Fire Expansion Triggered range: 6 m Triggered cast delay: 2 s
Enemy
Physical Damage Reduction: -5% Skill Damage Reduction: -10%
Enemy
Duration: 60 s
Enemy
Duration: 60 s
Enemy
Physical Damage Reduction: -15% -1.5% × Chemical Etching level + 0% Physical Defense: -14% -2% × Chemical Etching - Armor Breaking level + 0%
Enemy
Chance: 100% Triggered skill: Fire Expansion Triggered range: 6 m Triggered cast delay: 2 s
Enemy
Physical Damage Reduction: -5% Skill Damage Reduction: -10%
Enemy
Duration: 60 s
Enemy
Duration: 60 s
Enemy
Physical Damage Reduction: -15% -1.5% × Chemical Etching level + 0% Physical Defense: -14% -2% × Chemical Etching - Armor Breaking level + 0%
Enemy
Chance: 100% Triggered skill: Fire Expansion Triggered range: 6 m Triggered cast delay: 2 s
Enemy
Physical Damage Reduction: -5% Skill Damage Reduction: -10%
Enemy
Duration: 60 s
Enemy
Duration: 60 s
Enemy
Physical Damage Reduction: -15% -1.5% × Chemical Etching level + 0% Physical Defense: -14% -2% × Chemical Etching - Armor Breaking level + 0%
Enemy
Chance: 100% Triggered skill: Fire Expansion Triggered range: 6 m Triggered cast delay: 2 s
Enemy
Physical Damage Reduction: -5% Skill Damage Reduction: -10%
Enemy
Duration: 60 s
Enemy
Duration: 60 s
Enemy
Physical Damage Reduction: -15% -1.5% × Chemical Etching level + 0% Physical Defense: -14% -2% × Chemical Etching - Armor Breaking level + 0%
Enemy
Chance: 100% Triggered skill: Fire Expansion Triggered range: 6 m Triggered cast delay: 2 s
Enemy
Physical Damage Reduction: -5% Skill Damage Reduction: -10%
Enemy
Duration: 60 s
Enemy
Duration: 60 s
Enemy
Physical Damage Reduction: -15% -1.5% × Chemical Etching level + 0% Physical Defense: -14% -2% × Chemical Etching - Armor Breaking level + 0%
Enemy
Chance: 100% Triggered skill: Fire Expansion Triggered range: 6 m Triggered cast delay: 2 s
Enemy
Physical Damage Reduction: -5% Skill Damage Reduction: -10%
Enemy
Duration: 60 s
Enemy
Duration: 60 s
Enemy
Physical Damage Reduction: -15% -1.5% × Chemical Etching level + 0% Physical Defense: -14% -2% × Chemical Etching - Armor Breaking level + 0%
Enemy
Chance: 100% Triggered skill: Fire Expansion Triggered range: 6 m Triggered cast delay: 2 s
Enemy
Physical Damage Reduction: -5% Skill Damage Reduction: -10%
Enemy
Duration: 60 s
Enemy
Duration: 60 s
Enemy
Physical Damage Reduction: -15% -1.5% × Chemical Etching level + 0% Physical Defense: -14% -2% × Chemical Etching - Armor Breaking level + 0%
Enemy
Chance: 100% Triggered skill: Fire Expansion Triggered range: 6 m Triggered cast delay: 2 s
Enemy
Physical Damage Reduction: -5% Skill Damage Reduction: -10%
Enemy
Duration: 60 s
Enemy
Duration: 60 s
Enemy
Physical Damage Reduction: -15% -1.5% × Chemical Etching level + 0% Physical Defense: -14% -2% × Chemical Etching - Armor Breaking level + 0%
Enemy
Chance: 100% Triggered skill: Fire Expansion Triggered range: 6 m Triggered cast delay: 2 s
Enemy
Physical Damage Reduction: -5% Skill Damage Reduction: -10%
Description Deals ((AtkM.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 ((AtkM.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 ((AtkM.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 ((AtkM.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 ((AtkM.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 ((AtkM.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 ((AtkM.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 ((AtkM.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 ((AtkM.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 ((AtkM.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 ((AtkM.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 ((AtkM.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 ((AtkM.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 ((AtkM.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 ((AtkM.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 ((AtkM.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 ((AtkM.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 ((AtkM.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 ((AtkM.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 ((AtkM.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
Maximum-level buffs, conditions, and stat changes.
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
-15%
Formula: -1.5% × Chemical Etching level + 0%
Physical Defense
-14%
Formula: -2% × Chemical Etching - Armor Breaking level + 0%

Trigger Fire Expansion

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

酸蚀之触[1]效果

物伤减免和技能伤害减免降低
Enemy
Applied change
Physical Damage Reduction
-5%
Skill Damage Reduction
-10%
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