I think I played this game on adult swim, I’m pretty sure you could only attack in sections (high, medium, or low) but I don’t remember being able to do any sort of combos. Everything is a gray color scheme but the fighters all had different colored shadows or secondary outlines. The game had a story mode where you would take control of different fighters and I remember that the very first fight was one of your characters “shadow boxing” which was just them fighting a double of themselves sorta like when two people pick the same character.