Great walkthrogh to earn the hard badge : http://www.youtube.com/watch?v=OQNot5MD_eY .
It's basically what thatguyyaknow said, but more accurate.
Helped me to get the hard badge easily ;-)
Nice game, though the font of the story between the levels and the episodes is very hard to understand.
for example, the letter "i" and the word "in" looks exactly the same!!
3/5.
 "Dillo Hills"){kind=icon}
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 "Where is Tïrstï?"){kind=icon}
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 "They Took Our Candy"){kind=icon}
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 "Viricide"){kind=icon}
 "Desktop Tower Defense 1.5"){kind=icon}
 "Dreams"){kind=icon}
 "Amberial: Nebulosa Realms"){kind=icon}