Thanks for the advice on the Zipping. Also, yea, I didn't add a way to exit the game. Sorry :/. I get so used to Alt-F4ing out of everything that I kind of forgot.
As for the attack slowing, I intentionally added that mechanic to cause tension and create risk. You can dash during the last half of the stab animation to speed up your ability to move, so there's that, but I thought it'd be too easy if you could just move around will nilly. It may be that fun trumps difficulty in this case. I actually plan to work on the game a bit more, and if I find that the slowed movement is annoying, I'll probably remove it (or at least make you move faster.)