User blog comment:USARMP/Ninjas in Mass Effect/@comment-3325589-20120408223908/@comment-4973403-20120410033400

Still have to penetrate the armor, and I'm sure that even the joints are pretty tear/rip/cut resistant, since most sets (Liara being an exception since she has no helmet) protect the user from vacuum, and are armored. I'm sure that there is more to than then just the outer plates.