I'm sorry if this has been already answered, but it's been bothering me for a while already.
I recall seeing a video, a couple months ago, where a Zero could take down that guy and it's snakes, ignoring their previous resistance to physical attacks; but once I've tried going there, such resistance was still there.
These are some examples:
Am I missing something? Is there another way to get rid of these things that I'm not aware of? D: