if you complete all the missions and exit game than select new game in a different slot it say's that all the missions have already been finished but if you go back to your original save slot all the missions have been reset back to 0/27 .. just a bug that I found.
 "Reactor Incremental"){kind=icon}
 "... :D"){kind=icon}
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 "Zombotron 2: Time Machine"){kind=icon}
 "The Peacekeeper"){kind=icon}
 "bit Dungeon"){kind=icon}
 "Rogue Soul"){kind=icon}
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 "IntoSpace!"){kind=icon}