Yeah if most of these reviews are saying that the game is hard because of flash, you might want to consider changing some things up. Some problems I faced: Red tiles would pop up under my pointer while I was clicking. Flash would hiccup and clicks and mouse movement wouldn't register. Final boss cheats way to hard. If my mouse was on the wrong side of the screen I wouldn't be able to follow the snake pattern and die miserably.
Some suggestions: Put a retry button after death or surrender. It's really annoying having to go up to the guard multiple times especially if you get 3X the XP by doing a no hit run of the enemies. Put in a checkpoint mode or a mode that saves your XP when you restart. Put in an option that lets you kill an enemy, but if you want to do a no hit run, you can fight them again. The timed mode should be a challenge mode for people who like that kind of thing and you can brag about you time on a porn game to random people on the internet.
Edit: The enemies get stronger in NG+? What the hell man.