I thought the impossible badge would be, "Beat all of the bosses in 5 runs or less" but then when I actually read it and got to insane mode, i figured out why it was the impossible badge.
Tip: When controlling both blobs, to make 'her' jump, press down. Also on the last level you don't have to press up and down at the same time. You have to make 'her' jump on the block to 'her' left, then jump to the right with 'him'. 'She' will press the button allowing 'him' to land safely on the appearing platform.
Big rage about flappy bird, borrows friends device for half an hour or downloads to own phone then gets a good score of probably 9 or so (mines 125). Comes out with computer version, plays one or two rounds. Then thinks "Yeah, nevermind I'm not doing this to myself again."
Very challenging indeed! Great platformer that i would love to see more of! 5/5 Pro Tip: If your stuck on a level, try being more awesome, that generally helps!
I set up some of the past selves pretty great considering I didn't know about it. Just run back and forth in a spot until your guy almost reaches you and it makes the orange levels really easy!