A recent gameplay demonstration offered a look at Onimusha: Way of the Sword's Carnage Difficulty, the game's most challenging setting. This footage features a player engaging with Enhanced Byakko, a secret boss that is an augmented version of the demo's boss, while adhering to a no-damage challenge.

Carnage Difficulty is not accessible from the outset; it becomes available only after players have successfully completed the game on normal difficulty. The demonstration showcases intricate combat maneuvers and strategic engagement with the formidable foe, underscoring the advanced mechanics and enemy behaviors present in the hardest mode. The music featured in the clip is "Oda's Army Attack" from Onimusha 2: Samurai's Destiny.