I think this game has scored highest from me so far. There is really nothing to fault.
I love the cute artstyle (reminds me of Mario Vs DK, kinda played like it too), the writing is funny. Level design is extremely impressive, I wonder how many braincells did you kill to come up with a level that are challenging and fun like these. The amount of levels is alot for just 2 weeks of solo work too.
The concept is really clever and matched the theme really well.
I did encounter minor collision bugs like gioba described, but nothing too annoying since the entire sequence is reversed in 10 seconds anyway.
Awesome job on this!