Ending Fatigue: Chapter 8 is long, very long, and consists of no less than three major battles that are lengthy in their own rights with the first one of them being the most difficult. Players who initially stated their interests in obtaining every ending or playing New Game Plus said they changed their minds after realizing they'd have to do Chapter 8 again every time.
Jerkass Woobie: Geminine. She is violent, arrogant and an overall jerkass who is more than willing to indulge in Disproportionate Retribution, to say nothing of her attempt at Split-Personality Takeover... And also a completely broken individual whose very existence was unknown to everyone, including her own parents. The one person to realize she and Gemini were different identities was her beloved master, whose murder at the hands of Ranmaru marks her Start of Darkness. Geminine breaks down in tears after Shinjiro makes her see how far she has fallen, and, by the end of the chapter, she decides not to interfere with Gemini's life again.
Oda Nobunaga is a fierce demon lord whose might and strategic cunning has pushed New York into near complete conquest. A former Imperial general turned demon, Nobunaga in the past nearly destroyed and ruled over Japan until he was sealed away by the Five Ring Warriors. Having anticipated all of this, Nobunaga entrusts a plan to revive him to his most loyal servant Ranmaru. Upon reawakening, Nobunaga plunges New York into demonic hellscape using his sheer power and tactics with the demon army, even crippling the Combat Revue with a clever trap by sacrificing Ranmaru to eliminate Shinya. When Shinya returns and leads the group into the final battle against him, Nobunaga faces them with all head on, nearly winning multiple times through his many strategies and unyielding will, till the end and upon defeat graciously accepts a deal with Shinya to view the world in his eyes, giving him a chance to prove Nobunaga's brutal views wrong.
Ranmaru is the most faithful servant of Nobunaga who, through his wit, was able to manipulate all sides in bringing back his beloved master. As the leader of Nobunaga's guard, Ranmaru leads his group into spreading chaos all over New York, unbeknownst to the New York Combat Revue, in a ploy to complete Nobunaga's prophecy. Preparing it for years in advance, Ranmaru is able to manipulate his allies and enemies alike into accomplishing his goal, even nearly defeating the entire Combat Revue, putting Ratchet out of commission and almost electrifying them all to death before faking surrender to work in the shadows. With his master's return, Ranmaru leads the charge to his invasion, nearly trapping the Combat Revue in a dark vortex. Faking his death again, Ranmaru ambushes Shinya and sacrifices himself so his master can eliminate him, dying praising his lord.
One-Scene Wonder: Sakura Shinguji and Ichiro Ogami's appearance in the game's prologue, where they send Shinjiro off to New York City.
That One Level: The first fight of chapter 8 brings with it a huge Difficulty Spike for the endgame. You have to defend the Ahab's engines from wave after wave of enemies until it rises to a certain altitude. There's very little room for error as said engines don't have much health at all and since it's a combination of both land and flight combat, you're going to have to spread your units very thin.
