Just think of all the best parts of Lord of the Rings: Return of the King then swap out any Anglo-centric imagery with all of the dopeness of Japanese myth and you have an inkling as to how badass the opening cinematic of Onimusha 3.
Skeletons, ninjas, skeleton-ninjas, and giant insectoid titans treading the battlefield are all displayed in true summer blockbuster fashion. Just look at the fight choreography, it's flawless. It looks as if it could have been plucked directly from a classic Jet Li film. Amazing and it still resonates all these years later.