Hey thanks for playing! When you said that thing about not being able to enter the gauntlet, I immediately knew why it happens. I recently added a 4th world, but decided not to include it in this demo. So I deleted the world but forgot to delete its stars requirement. Thanks for catching that bug!
About the character, he's not supposed to be a rabbit, he's supposed to be an alien. But everyone thinks he's a bunny so I guess he can be an alien rabbit lol.