Player 1 - Arrow Keys Left/Right - Move Left/Right Up - Dodge Down - Attack Player 2 - WASD A & D - Move Left/Right W - Dodge S - Attack
This game was made in 2008. I eventually found a way to make better combat, and this was the perfect base example. You're invincible while you dodge, and you're forever pointing in the direction of your opponent. This way either player could win or make a comeback with a little bit of learning and skill.