The game overall is pretty simple, but I had fun with it. The only issues I had were that in order to the special attack you have to press spacebar, but that also scrolls the window. The other thing is that sometimes you enter badman mode within less than 5 seconds of entering gentleman mode, leaving you with very little time to get health back, however this is fine for the most part as it adds a bit more difficulty.
There were a few more minor things, but enjoyable overall.