I was thinking that because there are so many melee type enemies in this game, that you could have a "Clash" if you melee at the same time, you mash the the X button repeatedly until one of you wins, it could take longer depending how strong your enemy is like a Major or a Boss, the reason I am posting this is because I always thought it would be awesome to get into an Arc Blade or Sword Bearer's Blade clash with Crota to break his shield once