May just be me, but for the challenge "Big Pappa". If he hits me once, I lose. I don't respawn, or go to the menu though. It just stays on the screen and doesn't allow me to do anything. Other than that and the annoyingly sensitive collision aspect. 4/5
 "Granny Strikes Back"){kind=icon}
 "Crow In Hell"){kind=icon}
Really sorry for that ( Saved data is lost because we made update. We want to make good game.