I think that Snape is very powerful in his own right and I do believe that if someone he cared for we truly hurt that he would be able to react quite violently. Now finding someone he actually cares about is the hard part.Originally Posted by Gmariam
As for Snape's Occlumency, I think that he must have been a natural, I mean what talent did he really have in school? I think that he developed it during his school years. But that is just a possibility.
As for him killing people, I think that as a death eater on many levels, he had to have killed someone by now. I think that killing would be one of Voldermorts favorite tasks, so I don't see how snape could have gotten out of doing so .