I had the black screen before too. Tried clearing cache and refreshing. Browser cannot have anything else on other tabs for me, in order for it to work.
As for the badge... there is no counter that's visible. When you get 500, it will tell you in game (achievement in game) which gets translated to badge in Kong.
There are new spells if you patrol the area. After you've cleared all the paths to green after reaching the castle, you'll head back to castle for your new spell. This is first in series.
Eh silverfire, ease up, eh? Those game tutorials are also have "one shot interactions", but they got badges. Nothing wrong with this game if it has a heavy story element to it... Who are you to determine what belongs on Kongregate, when you don't even have a submission?
4/5, even if I didn't understand everything. At least I try to learn Portugese!
Thanks for the kind words, buddy!