All Onimusha Warlords Bosses Ranked by Difficulty (Hardest to Easiest)

Boss Difficulty Ranking Introduction

Onimusha Warlords features 6 main boss encounters, including two fights against Marcellus in different forms. This ranking evaluates each boss based on attack complexity, damage output, HP pool, phase mechanics, and overall difficulty for the average player.

The ranking goes from hardest (number 1) to easiest (number 6). Each entry includes recommended weapons, key strategies, and Issen opportunities.

#1 Hardest - Fortinbras (Final Boss)

Fortinbras - The Demon King

Fortinbras is the final boss and the hardest encounter in the game. He has three phases, each with different attack patterns. Phase 1 features sweeping claw attacks and a grab. Phase 2 adds a laser beam and summon attacks. Phase 3 is a desperate rush where Fortinbras attacks rapidly with minimal recovery time.

Key strategy: Save Oni Mode for phase 3. Use magic attacks during phase 1 and 2 to chip away safely. Learn which attacks are Issen-able (the claw sweep and grab) for massive damage. Bring at least 5 healing items.

#2 - Marcellus (Second Encounter, Mutated)

Marcellus - Mutated Form

The second Marcellus fight is dramatically harder than the first. He is faster, has new combo attacks, and enters a mutated second phase where he gains a ranged energy attack and faster movement. His grab attack deals massive damage and can knock you into hazards.

Key strategy: In phase 1, punish his overhead slam with an Issen. In phase 2, maintain medium range and dodge his energy projectiles. Use magic attacks when he pauses between combos. Save 3 healing items for this fight.

#3 - Gargant

Gargant - The Giant

Gargant is a massive demon with devastating physical attacks. His size makes him slow, but each hit deals enormous damage. His ground pound creates a shockwave that can hit you even if you are not directly in front of him. He also has a charge attack that covers distance quickly.

Key strategy: Stay behind or to his side. Use Shiden's long range to hit him safely. Issen his ground pound for big damage. When he winds up for a charge, dodge sideways immediately.

#4 - Hecuba

Hecuba - Insect Queen

Hecuba fights alongside summoned insect minions that harass you throughout the battle. She herself has a lunge attack, a poison spray, and an area attack. The main challenge is managing the adds while dealing damage to Hecuba.

Key strategy: Use Raizan to stun and quickly dispatch the insect minions. When the area is clear, focus damage on Hecuba. Issen her lunge attack. Do not let the minions overwhelm you, as their attacks can interrupt your combos.

#5 - Marcellus (First Encounter)

Marcellus - Armored Demon

The first Marcellus encounter is a skill check that tests your understanding of the combat system. He has a predictable overhead slash, a thrust, and a combo string. His attacks are well-telegraphed, making this a good fight for practicing Issen timing.

Key strategy: Watch for his overhead slash, which has a clear windup and is easy to Issen. Dodge his thrust by sidestepping. Punish his combo string by attacking during his recovery animation. This fight is harder than it looks if you are under-leveled.

#6 Easiest - Reynaldo

Reynaldo - Tentacle Demon

Reynaldo is the easiest boss in Onimusha Warlords. His attacks are slow and heavily telegraphed. He has a tentacle slam, a sweep attack, and a grab. All three attacks have long windup animations that give you plenty of time to react.

Key strategy: Stay at medium range and bait his tentacle slam. Issen it for an easy win. If you struggle with Issen, simply attack during his recovery animations. Use magic attacks freely, as you will not need to save them for later phases.