The game otherwise known in the West as Warriors Orochi 3 Ultimate adds a new dungeon-crawler-style game mode, called the Unlimited Mode. In this mode, you form a party of five to fight enemies on your way to the escape point. Each dungeon is composed of multiple battlefields, and your goal is to find the escape point. You can level up and collect items as you try to find your way out.
The site also reveals two new characters original to the series: Kyūbi no Kitsune and Hundun.
Hundun, looking true to his mythological origins, is a demon mystic described as "chaos itself", wielding a hatchet in each of his four arms.
The original concept designs for Kitsune and Hundun, as well as previously revealed original characters Yinglong, Young Nezha and Tamamo no Mae, were done by Akihiro Yamada.
The video unveils new scenarios that expand the story of the entire series, featuring the new characters sans Kitsune and Hundun.
The trailer also previews new special attacks such as the Triple Rush and True Musou Burst along with other gameplay additions, tweaks and changes, and introduces two new game modes: the aforementioned Unlimited Mode and the Duel Mode.
The Duel Mode is a two-player 3-on-3 versus mode that also makes use of a four-card battle system. You can play against locally or online against a human opponent or against a computer AI in this mode.
The game is scheduled for release in Japan for the PS3 and PSVita on September 26.
Sources: Siliconera, Musou Orochi 2 Ultimate Official Site