Level 27 is NOT broken, I just did it.
Go to the menu, click on scores. Then on the top left corner of the screen you will play a snake game with the arrow keys, it's just hard to notice it
It's a great game but physics in this game sucks a lot, it ignores the Newton's first law and the concept of inertia. How the hell can a tower of only green blocks begin to shake as hell if there's nothing to push them? Exepct if there's wind, but anybody who has half of a brain wouldn't put wind on this game. I got the impossible badge after a thousand tries but it's annoying to get to 30 left and see the tower begin to shake from an invisible force
I will give some advices to help for the imp badge. Well, first of all try to make every level as fast as possible to save up some time to level E. Then, in level E the first part, before the grey thing, can be done in about 10s. After that you can do all the rest of the maze steady and slowly, gently pushing the line to the right direction, just don't stop completely or the line will disapear. If you have saved up enough time in the other levels you will get it. And hell yeah, I got it :D
Actually you don't instantly lose when your castle is destroyed, you (as a king or something) go out of the ruins with a big bow and keep on fighting. If your king dies then you lose, your castle can be destroyed