Hey dude, thanks for commenting. It has been a while since my last update because I got busy with school again but I do plan on continuing soon.
By physics, are you referring to things like ragdoll effects? I'm always interested in giving the game more impact so you can be sure I'll be tweaking the kills over time. I've been thinking about adding new weapons or fighting styles since the beginning but it would be a huge undertaking so for now it will likely remain as just katanas. I do like the idea of different fighting styles (I particularly like the idea of a drunken-boxing style of swordplay) but keeping everything balanced would be my number 1 priority.
Anyway, thanks for sticking around. I really appreciate it.