Nice entry with great level design ideas which are introducing well all new mechanics one by one! The progression feels good, and the difficulty curve feels well-balanced as well.
Musics is fitting nicely with the gameplay and atmosphere, and sounds effects bring humor and life to characters, nice touch!
Sometimes it seems that we don't need to use all items given to succeed the level, which is a good indication of the potential depth of the gameplay I think, it is a good point!
Not sure if it is on purpose, but the last level has two collectables, but only one is required to complete the level... is there any hidden secret about that? :)
Overall, congrats again for this entry! Knowing that it has all been done in just 48 hours.. that is pretty impressive!!