When GIga beats you he is supposed to laugh, But it isn't working. I would love someone to help me

http://scratch.mit.edu/projects/11359217/#editor

You have a forever loop and as soon as nano's health is < 0 then you broadcast you lose. This will keep happening so your braodcast you lose continuously. Your You lose srcripts will never get a chance to run, so try and ensure you lose is broadcast only once.