ID 66 is a tricky one, it goes on the basis of 'Juggling' where you move a single tower from one spot (by selling it, you get 100% sell back on lvl 1) to another, to continually block, open, block a route to the end, Thus making the Enemies walk past all your towers multiple times as they try to reach the Exit you keep moving.
Ragnarok is the Norse end of the world where the ice giants descend from the mountains and battle the gods... in the game, you has to kill a boat load of dragons =]
nincek, Your a moron, there is no way you could get to lvl 245 darwin and be only lvl 48. also, given by the fact your screen shot shows you dont have the 'Demise of Species Badge' further proves that your a first class pillock
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