Hello :) thank you for playing and I'm really happy to see you like it. Yeah the collisions are a bit weird coz i couldn't fit the animations with my mechanically programmed hit boxes. I will fix that in future versions.
I didn't use state machines. I actually have no big experience on developing fighting games before but it was a long time dream. I started to program this one from scratch using libGDX; a very good java framework. It's pure java code also I've done the physical modeling with Box2D.
Thanks again so much for your time and interest :)