Once I decapitated an Archer and after his head flew up, he shot his arrow. Not sure if it was a bug, but it was pretty cool.
Also a lot of times when you snap their knees while they're doing a move, it makes the snapping noise, but they don't get affected.
I'm not sure what you guys are on about, this game works fine for me for the most part.
Unfortunately, I can't get past the level 5 boss, I have no idea what to do