I love it! Your run leading up to the stab is great and it really builds up anticipation for what's about to come. The leap and the stab are great too, great sense of weight. The only glaring thing I noticed is that lack of reaction from the dude getting stabbed. The blade penetrates and exits but there doesn't appear to…
I really like it but one thing that stuck out with me was the camera transition. I think the shot would work better having the camera focus on the "hero?" and see the guy fall in the background. Maybe use some depth of field to accomplish this. It's just too jarring with the current transition though.