Combining Mecha: the Ironmen do this in their final battle with Fourze. Fourze fights back with a Combining Mecha of his own, with the Massigler and the Powerdizer.
Conservation of Ninjutsu: one of the more memorable parts of the movie sees Fourze and Meteor taking on all 12 Horoscopes, having no problem taking them on (until it was down to 4, although it was less about them struggling to beat them, but more about Fourze and Meteor needing to reach the shuttle before launch), even though each individual Horoscope gave both Riders trouble in the main series itself. This probably has to do with the fact that they're mere copies of the actual Horoscopes.
Defecting for Love: played with; Inga Blink starts out as an antagonist, only because the Club is being manipulated by the Ironmen. When their true colors have shown, Inga and the Club immediately join forces, and Inga starts showing feelings for Ryuusei.
Eleventh Hour Superpower: XVII's Brain provides Kengo with blueprints for a new Special Astro Switch to use against the Ironmen, resulting in the debut of Fourze Meteor Fusion State.
Early-Bird Cameo: As expected, Kamen Rider Wizard makes his debut in this movie, fighting off the remaining 4 Horoscopes so Fourze and Meteor can hop aboard their spaceship. Notably, unlike histhreepredecessors where they made their cameo debut near the end of the movie, Wizard's cameo occurs in the middle of this movie.
Gondor Calls for Aid: in order to activate a new special Astro Switch, the Kamen Rider Club enlists the help of the entire Amanogawa student body to press the 40 Astro Switches in a countdown order. This includes much of the supporting cast, some former Zodiarts, and even the Big Bad.