4th Class Skill Enhancement Tree Guide

Conditions for using skill enhancement tree

Call skill enhancement tree UI

Characters who have completed the 4th class advancement can use the skill enhancement tree to further strengthen their character.

In the Skill Enhancement Tree, you can call the UI by clicking the 'Ctrl + A' button and the 'Skill Enhancement' button in the character information window.

Acquiring and using skill enhancement tree points

You can acquire 1 point each time you level up your character after completing the 4th class change.

Click the slot in the skill enhancement tree to enhance and use the points to enhance the skill.

Skill Enhancement Tree Basic Settings Mu Online

Skill enhancement by class

Main skill enhancement - by class

You can enhance the main skill set for each class.

When a skill is strengthened using the skill enhancement tree, it is applied in place of the existing skill.

Dark Wizard
Meteor Strike Enhanced
Meteor Storm Enhanced
Evil Spirit Enhanced
Dark Knight
Rageful Blow Enhanced
Death Stab Enhanced
Fire Blow Enhanced
Fairy Elf
Triple Shot Enhanced
Multi Shot Enhanced
Focus Shot Enhanced
Dark Lord
Fire Burst Enhanced
Chaotic Diseier Enhanced
Wind Soul Enhanced
Summoner
Fire Beast Enhanced
Lightning Shock Enhanced
Aqua Beast Enhanced
Rage Fighter
Dragon Roar Enhanced
Chain Drive Enhanced
Dark Side Enhanced
Magic Gladiator
Gigantic Storm Enhanced
Evil Spirit Enhanced
Dark Blast Enhanced
Fire Slash Enhanced
Fire Blood Enhanced
Ice Blood Enhanced
Grow Lancer
Magic Pin Enhanced
Breche Enhanced
Shining Peak Enhanced

Skill enhancement options

Additional effects can be applied to the strengthened main skill by strengthening the skill enhancement options according to the tree configuration.

Enhanced skill enhancement options are applied when using the connected main skill, and do not apply to other skills.

Depending on the function of the main skill, skill enhancement options are classified and applied.

NameDescription
Increase Skill DamageIncreases Main Skill Damage
Increase the additional damageAdded Additional Damage to Main Skill
Increase the rate of additional damageIncreases the rate that Additional Damage will appear
Increases Attack SpeedIncreases Attack Speed
Increases RangeIncreases the Attack Range of the Main Skill
Add splash damageAdded Splash Damage to Main Skill
Increases DistanceIncreases Main Skill Attack Distance
Target increaseThe Damage the Target receives is increased when Using the Main Skill
Reduce Reuse TimeReduces Main Skill Cooldown
Eliminate Reuse TimeRemoves Main Skill Cooldown
Weapon Attack Power Increase (%)Increases the Damage (Min / Max) of your Weapon (%)
Increased Weapon Power (%)Increases Magic Damage (Min / Max) of your Weapon (%)

Debuff Enhancement Option

Debuff option enhancement setting

Depending on the tree structure of the strengthened main skill, the debuff option can be strengthened to apply the debuff effect to the target.

Enhanced debuff options are applied when using the main skill, and do not apply to other skills.

Depending on the main skill type, debuff options are applied separately.

All 4 debuffs can be applied to the target.

* Through the Season12 Part 2 update, the debuff option is applied only to monsters and will be applied to PVP in the future.

Types and Classification of Debuff Options

Through the debuff option linked to each skill, the devert state can be applied to the target according to the enhancement probability.

The basic debuff state can be applied by strengthening the basic debuff option, and the state of the target can be upgraded and applied by strengthening the debuff upgrade option.

DivisionBase DebuffUpgrade Debuff
Poisoning SeriesPoisonPoison Addiction
Freezing SeriesFrozenFreezing
Bleeding SeriesBleedingExcessive Bleeding
Shocking SeriesShockStun

How to apply debuffs and upgrade debuffs

If you strengthen the debuff rate increase option through the skill enhancement tree, you will have a chance to apply the enhanced debuff according to the probability when using the main skill.

If you strengthen the 'Increase Debuff Rate' option after strengthening the 'Increase Debuff Rate' option, you can upgrade the debuff status applied to the target.

StateApply debuff option to target
Enhance basic debuff optionsWhen attacking the main skill, apply a basic debuff state to the target according to the enhanced probability
Enhanced basic debuff options + Enhanced debuff upgrade optionsBasic debuff status is applied to the target according to the enhanced probability when attacking the main skill. Debuff status can be upgraded according to the debuff upgrade probability while the target's basic debuff status continues (If the target's basic debuff status is canceled, the debuff upgrade probability is does not apply.)

Debuff enhancement option

NameDescription
Increase Chance of Poisoning (1)
When using the main skill, the target (Poison, freezing, bleeding, shock) debuff is applies according to probability.
Poison: Poison dot damage is applied per 0.5 seconds.
Bleeding: The target receives one additional damage when it receives a skill attack.
Freezing: Targets are affected by reduced movement speed and reduced defense.
Shock: The probability that every second shock will trigger the effect is applied.
Increase Chance of Freezing (1)
Increase Chance of Bleeding (1)
Increase Chance of Shock (1)
Increase Poisoning effect (1)
The effect of the debuff applied to the target increases with the enhanced state.
Poison: Poison dot damage increases.
Bleeding: Bleeding damage increases.
Freezing: Reduces the effect of reducing target's defense.
The probability of shock effects being applied increases during the duration of the shock debuff.
Increase Freezing effect (1)
Increase Bleeding effect (1)
Increase Shock effect (1)
Increase Poisoning Duration (1)
The duration of the (Poison, freezing, bleeding, shock) debuff applied to the target increases.
Increase Freezing Duration (1)
Increase Bleeding Duration (1)
Increase Shock Duration (1)
Poisoning upgrade Chance (Addiction) (1)
Upgrade the debuff effect applied to the target (Poison, freezing, bleeding, shock).
Poison: Poison dot damage is applied as double damage.
Bleeding: Basic bleeding damage is increased and applied.
Freezing: With the freezing effect maintained, the attack speed reduction effect is applied.
Shock: The state of inaction effect is applied.
Freezing upgrade Chance (Freeze) (1)
Bleeding upgrade Chance (Excessive Bleeding) (1)
Shocking upgrade Chance (Stun) (1)
Increases Upgraded Poisoning Effect (1)
The effect of the debuff applied to the target increases.
Poison: Poison dot damage increases.
Bleeding: Bleeding damage increases.
Freezing: The target's movement speed and attack speed are reduced by the effect % value.
Shock: Stun debuff duration increases.
Increases Upgraded Freezing Effect (1)
Increases Upgraded Bleeding Effect (1)
Increases Upgraded Shocking Effect(1)

Debuff explosion skill

You can use the 'New Active Skill' to inflict high explosive damage to a target affected by an upgrade debuff.

When using the explosion skill, the upgrade debuff option applied to the target is canceled, and the debuff state can be applied again.

Conditions and effects of new active skills

New Active SkillTerms of UseBasic Use EffectDisable Debuff
Poisoning StormPoison debuff applied to targetThe poisoning effect explodes, inflicting damage, and infecting monsters around the target with a deadly poison effectRemoves poison debuff effect from target
Freezing SlaughterTarget with freeze debuff appliedThe freeze effect explodes and damage is applied, and splash damage is applied to monsters around the targetRemove target's freeze debuff effect
Bleeding HeartTarget with excessive bleeding debuff appliedThe excessive bleeding effect explodes, applying damage and reducing the target's defense for a certain period of timeRemoves the target's excessive bleeding debuff effect
Shocking BoomTarget with stun debuff appliedThe stun effect explodes, applying damage and blinding the target for 2 secondsRemove target's stun debuff effect