Here's a hint for those of you going for the hard badge: Kitty can be used to move enemies to spots that are easier for you to avoid if you can remove Kitty fast enough. Before you get the whistle, you can remove Kitty by dying.
Hmm, so I'm digging for uranium to create more giant mammals whilst trying to reach a forgein super power. Our protagonist might not exactly be a hero.
@Janneke, did you clear your cache, by chance? Doing so removes saved games. I'll also add that you have to use the same computer and browser, just in case