So there was this giant spider. I mean like, the size of my hand.* Ohmaigod. So I went with a melee attack which only knocked it out. I followed that up with my sonic attack. Kitty was not amused. Though she was curious, she deigned not to help me. Eventually I called in another member of my formation to finish it off.
I think spiders must have resistance to sonic because it didn't seem fazed by my impressive power.