I think you might need to check the box for "this file will be played in the browser" :)
That way it should run straight on itch without people having to download a file, which should make it easier for people to play.
I also really don't think you're allowed to use the music you've used - I recognise a lot of it (F-77 to start is a banger), and you need a licences to use it in your own games. It might be free to download, but the MDK stuff at least is just to listen to!
As far as the game goes... I just got a green "you failed" screen immediately. I couldn't really work out what was going on, sorry!