Onimusha: Way of the Sword Issen & Break Issen Guide

The Issen is the signature payoff of Onimusha combat — a single, precisely timed flash of the blade that can end an enemy outright. Basic Issen counters an incoming attack; Break Issen rewards draining enemy stamina. Here is how those actions differ and how Oni power supports them.

What is an Issen?

Issen — a "one-flash" strike — is a precise critical counterattack. Press an attack button just before the enemy's attack connects. PlayStation's hands-on report describes this as a separate action from Parry and Deflect. Landing it deals heavy damage and releases more souls from the enemy.

What happened to Issen — and how it differs from the old games

Way of the Sword builds Issen into a wider set of mechanics: basic Issen, Chain Issen for groups, and Break Issen for staggered enemies, all linked to the stamina-and-stagger loop. The classic games treated Issen as a standalone, often instant-kill counter. CAPCOM has not published a detailed comparison with the classic games, so the exact differences remain unconfirmed.

How to land an Issen

Keep the basic Issen counter separate from the stamina-based Break Issen:

Chain Issen — cutting down groups

Chain Issen lets you chain the flash: press an attack button just as an Issen attack lands to start the chain and dispatch multiple enemies in quick succession — each clean flash flows into slow-motion as you cut through a squad.

Break Issen — the stagger execution

Attacks and Deflect drain an opponent's stamina. Empty it and they stagger into exhaustion, opening a Break Issen — a potent finisher. CAPCOM's director confirms the depleted-stamina trigger. Where basic Issen is a timed counter, Break Issen is the payoff for sustained pressure.

• Build stamina damage. Consistent deflects and hits wear the enemy down.
• Watch for the stagger. When their guard breaks, the execution prompt opens.
• Cash it immediately. The stagger window is short; commit the moment it appears.
• Plan multi-kills. Set up carefully and you can Break Issen several exhausted enemies in quick succession.

Targeting boss body parts

Against bosses, a Break Issen lets you choose which body part to strike — and different parts yield different benefits. Choose your target according to the current state of battle.

Oni Armament & soul absorption

Your Oni power feeds the offence. Absorbing souls from fallen enemies charges Musashi's resources — yellow souls restore health, blue souls fill the Oni Power gauge that pays for Oni Armament abilities, and red souls are spent on upgrades. The twin blades — the Two Celestials — make enemies release yellow souls on hit, so the armament heals you as it deals damage.

Soul absorption keeps your Oni resources topped up between fights, so the more cleanly you execute, the more often you can lean on Oni Armament and the stronger your follow-ups become. The full resource loop — all three soul types, the three Oni abilities and all three Oni Armaments — is covered in our Combat System overview.

Putting it together

Read the attack and choose a response: Parry for an opening, Deflect for stamina damage, or a precisely timed attack for basic Issen. Sustained stamina damage opens Break Issen. Absorb souls when safe to keep Oni power flowing.

Common mistakes

• Mashing for an Issen. It's a timed punish, not a button to spam — swinging blind eats a hit.
• Ignoring stamina. If you never push for a stagger, you skip the Break Issen and fights drag on.
• Confusing a follow-up with Issen. A counterattack after Parry or Reflex Dodge is not automatically basic Issen; that move requires its own timed attack against an incoming strike.
• Forgetting souls. Not absorbing souls starves your Oni power and weakens your follow-ups.

FAQ