Board Thread:Speculation House/@comment-25185936-20140718223622/@comment-3146930-20140718224909

Considering Ruby's scythe can easily cut a huge tree down, but she didn't kill any of the goons she fights in episode 1, I would assume that they are trained in how to not kill people, but still defeat them. If Yang went to the club and expected a fight with people, her gauntlets may have been filled with shells that cause less damage. Also it is said that people have Aura to protect them, that may explain why they weren't killed outright, as Grimm don't have Aura. So it may be a mix of dummy-rounds and knowing how to defeat someone without actually killing them.