pleeeease make a sequel with more levels =) great game! i usually suck at tower defenses, but i beat this one. i found it pretty easy once i had fully upgraded the demon section with a little mana and gold enhancement on the side. oh, and the shift key really helped me earning the hard badge. :-)
I liked this better than the other ten thousand "dodge the wall"-games because of the brake function (when you slightly move the mouse in the opposite direction).
Better be careful with those Monkey Storms :-) I just used them excessively (5 levels in a row or something like that) in medium mode, and after the last one, i got stuck at the end of level 48. No more bloons, but no start button, either...