HS
Samurai Explosive Kunai build

Explosive Kunai

S

The fastest and most lethal speed-farming build in S9. S9 buff: Intelligence scaling increased to 9x; 'Split up' mechanic boosted from 2% to 8% per point. Built around Int-scaled kunai explosions.

S
Speedfarm
B
Boss
A
Leveling
~2 min read

Skills & Mechanics

Main: Exploding Kunai+

Exploding Kunai (Ronin tree, Level 36, 32% proc chance, 546 Physical DMG at Level 100)

Core
Core Mechanic+

Quick Slash (max, primary movement, requires 1pt Battle Glance); Empire Slash (1pt, wall-jump mobility)

Mechanic
AoE Rotation+

Exploding Kunai (max) / Smoke Bomb (max, crowd control) / Warrior Spirit (max, combat effectiveness) / Live by the Sword (max, attack speed + damage reduction)

AoE

Support Skills

For Honor (1pt, damage buff)Burst of Speed (1pt, movement speed)Way of the Warrior (1pt, magic skill damage buff)

Skill Tree Allocation

These layouts show the available builder point spread for this build. Check each preset's confidence label before treating it as a source-verified import.

EndgameAll-PurposeReconstructed

Endgame Core Setup

Built around Explosive Kunai as the main clear skill, with Smoke Bomb and Warrior's Spirit carrying the endgame loop.

Quickslash handles movement while a light Emperor's Blade splash covers utility and travel.

Download Builder PresetOpen Builder

Ronin

Battle Glance

1/20

Shuriken Throw

0/20

Quickslash

10/20

Evasion

4/20

Smoke Bomb

20/20

Explosive Kunai

20/20

Warriors Spirit

20/20

Bushido

8/20

Live by the Sword

13/20

Emperors blade

Blade Barrier

0/20

Exploding Bolas

0/20

Fan of Knives

0/20

For Honor

1/20

Omnislash

0/20

Burst of Speed

1/20

Shadow Step

0/20

Way of the Warrior

1/20

Empires Slash

1/20

Build Setup

Attributes

Intelligence primary (increases kunai explosive damage and overall magic skill damage); Stamina for survivability in Hell/Inferno

Recommended Relics

Raw stat boost relicsMagic Skill Damage relicsIntelligence relics

Core Equipment

Weapon
Fast melee weaponBIS
Alt: +Arcane Skill Damage, +Magic Skill Damage %, Amethyst sockets
Armor
Satanic/Angelic tier armorBIS
Alt: Intelligence, Magic Skill Damage, Attack Speed affixes
Helmet
High socket count helmBIS
Intelligence / AoE / Magic Skill Damage % runewords
Gloves
Attack Speed glovesBIS
Alt: Intelligence + Magic Skill Damage
Boots
Movement speed bootsBIS
Alt: Intelligence + All Resist
Amulet
Magic Skill Damage amuletBIS
Alt: Intelligence + Attack Speed
Ring
Intelligence ringBIS
Alt: Attack Speed + Magic Skill Damage %
Charm
Raw stat boost charmBIS
Alt: Intelligence / Magic Skill Damage relic

FAQ

What do I use before Level 36 when Kunai unlocks?+

Max Blade Barrier for survivability and put 1 point in Fan of Knives for early AoE. Empire Slash at Level 30 helps with movement.

How does the S9 buff affect this build?+

Intelligence scaling increased to 9x and 'Split up' mechanic boosted from 2% to 8% per point, making kunai explosions significantly more lethal.

Can this build handle bosses?+

Boss fights require quick reflexes — you can't one-shot durable bosses. Focus on positioning and maintaining Way of the Warrior buff.

Is this build beginner-friendly?+

Yes — auto-targeting makes it accessible. The high APM demands fast decision-making, but the core rotation is straightforward.

Skill Rotation

  1. Early (1-30): max Blade Barrier for survivability, 1pt Fan of Knives for early AoE
  2. Level 30: unlock Empire Slash for movement
  3. Level 40-60: invest in Warrior Spirit for attack speed
  4. Endgame (60+): max Exploding Kunai, Smoke Bomb, Warrior Spirit, Live by the Sword
  5. Use Quick Slash for map traversal and repositioning
  6. Way of the Warrior buff active for magic skill damage

Pros & Cons

Pros

  • + Unmatched screen-clear speed and explosive AoE bursts
  • + Transitions extremely well from early leveling into high-tier endgame
  • + Hyper-mobile playstyle with Quick Slash repositioning
  • + S9 buffs: 9x Int scaling, 8% Split up per point make it even stronger
  • + Beginner-friendly auto-targeting

Cons

  • − Boss fights require quick reflexes — can't one-shot durable bosses
  • − Early levels (1-36) are slower before Kunai unlocks
  • − Requires good gear to maintain speed in Hell/Inferno
  • − High APM — demands fast decision-making and map routing

Data Sources

Data verified on 2026-05-12 · S9 Incarnation

[1]Hero Siege Wiki — SamuraiOfficial
[2]Odealo — S9 Tier List & BuildsCommunity

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