I liked the game, had fun, but I'd like to see it made in a longer jam, with more levels and more difficult puzzles. With just six levels it just gives you a taste :)
The presentation was good- the characters are cute and Halloween-y, and the theme of "uninvited guest" is utilized in a great way. I think that games that use the theme best use it on every level. They affect the plot, and are a constant factor in decisions that the player makes during the gameplay. You had that! Congrats!
Adding tutorial to a game like that is a must, and your was double cool, because you incorporated the tutorial messages into the gameplay,