Good
So far, I've beaten it with the warrior and archer, and gotten the last fight with the cleric and wizard. I notice from the scoreboard that the archer must be the easiest to beat the game with, and the cleric the hardest, which coincides with my experience.
Thank you for adding auto-fire! The game nearly unplayable without it!
My only real gripe now is, the special abilities seem really unresponsive. Often, I'll have to hold down the space bar for a whole second before the special even starts to go off. Yes, the special attack bar is full, and no, I'm not doing any normal attacks during that time. I know the wizard has a charge up for his special ability (the red flames that circle him for a bit), but this issue affects all the classes, even the wizard (i.e., I have to hold the space bar for one second before the red flames start circling him). I don't know if you did this on purpose, but I'd really like to see the delay eliminated.