Sure thing! It's mostly a linear action game, kind of a blend of the gameplay you'd expect from a Warriors game and that from a Platinum Game's title. You're in these mecha suits and you fly and dash around the stage doing so, with the game running on the Hedgehog Engine from Sonic Unleashed and Forces.
That probably accounts for about 20% of the gameplay, while the other 80% is a very immersive visual novel involving the main character trying to help operate a theater in a steampunk, early 1900s Japan. Every choice you make has an impact on the game's cast, with the people behind 999 and 428: Shibuya Scramble helping out with the scenario and script, and folks from the Yakuza studio working the game's cinematography.
Music is a central theme of the game, with their being 70 to 80 vocal themes alone, all composed by Kohei Tanaka of Gravity Rush and One Piece fame.
Overall, it's a very unique take on the genre, but it's also some of the best the medium has to offer.