Absolute insanity, lightning fast pace and for the most part completely unpredictable - "boss" attacks have their sets of patterns but even then you're still reacting to everything on the spot, and at that point it's often not unlike playing two games at once layered on top of each other. Somewhat lenient with small mistakes, but also demands a very high standard of play and deep understanding of its mechanics for you to even have a chance, and while "perfect dodging" is a pipe dream in a game this chaotic the later stages will expect you to pull off some truly ridiculous shit here and there. Easily one of the most exhilarating games I have ever played.