Attack of the Mutant Penguins - Guías

In the distant galaxy of Bleurggh, an evil (but reasonably stupid) band of aliens picked up some of Earth's television signals. Unfortunately for them, they could only tune in a wildlife program. They figured the Earth would be a pushover to invade, so they disguised themselves as its inhabitants -- penguins! Word of the invasion has reached those champions of intergalactic do-goodery, Bernard and Rodney. Now, with their help, you must prevent the alien mutant penguins from triggering the Doomscale and destroying the Earth. Are you up to the challenge?