Board Thread:General Discussion/@comment-97.95.138.90-20140330004141/@comment-3146930-20140331200028

However considering how fast some of the Grimm are able to move and how dangerous they can be considering their various abilities, you may not have time to spam 100 arrows and even if probability states that at least one will cause damage, that doesn't mean that the one arrow that hit will kill it before it reaches you. There isn't even a good chance that it would even slow down depending on how big it is.

I also agree that anything can be destroyed by hitting it hard enough, but the characters in RWBY don't have super strength and they may not have the physical capacity to break everything. You could argue that they just need a bigger hammer, but how long before the hammer is so big that they can't lift it anymore?