omfg if i was drunk this would be goddamn hilarious.
i'm not, and it's still frickin hilarious. am i actually supposed to kill anything or just restart over and over and LOLZ at the text?
all you have to do is let the creeps pull the cores out, kill them all in a tight area, then build towers around the cores. the game only stops you from blocking off the 4 squares where the cores used to be. maybe adding a feature where the cores warp back to the center at the end of the wave...
fixed!