Knockdown: How to Play (General and Character/Arena Specifics, Final Rules, Not Prototype)

About Knockdown, from BoardGameGeek:

Knockdown is a dynamic fighting game where you become a fighter and you have to knock down your opponent. During a game, you will have to surprise your opponent, create crazy combos, and, in the end, try to push them over by forcing them to the serious "Knockdown" test. All components from all Knockdown boxes can be mixed together.