The character is really cute! I really like the idea of having to reveal secret things in the map, but I think it should be something you use ocassionally, like a special ability, otherwise it's just an average platformer but with the mouse. I think making the player immediately die and go back is a little bit too frustrating too when you can't reealy predict what will happen, but for some games, that's the idea, depends on what you intended! Overall cool game, cute art ;)