Vanilla blend of Madness and BR
As a fan of both Madness and Battle Royale, I'd say this is a truly mediocre tribute to both. The Madness style is adapted well enough, but is personalized to this film, which I appreciate. Using audio clips from BR was a plus, too. However, the animation was rather sloppy, and the blood effects lacked the class that makes it so slick in Madness. Good effort, just nothing outstanding.
Pros: good nods to both sources of inspiration, music was cool
Cons: animation is weak
Suggestions: Spend more effort on the animations, and try to put your own edge onto the style and make it your own.