Nice attempt, but it could have been better.
it was a good concept, as the person before me had already pointed out. But I found that it was more frustrating than fun.
The stab actions were miserable to say the least. The opponent was able to stab a whole lot faster than you, regardless of the knife aquired. Even when dodging. In fact all of the opponents movements and actions seemed to work a lot better than your own. Faster dodging times, faster stab times, shorter intervals between stabs. The list goes on, but you get the picture.
Other than that, it was a good game, with a fairly good concept. Maybe for future flashs or a potential sequel, create a better atmosphere. Maybe set it up like a proper tournament, with a tournament ladder, or perhaps stabbing leaques. The better you get, the better league you can enter, etc. This game has a lot of potential, but the the realisation of that potential sadly could have been better.
Either way, keep up the work and good luck for your next flash. I am looking forward to testing it as well.