I love (no pun intented) your usage of the theme. It had its own personality.
The final level was quite frustrating honestly, because you needed to act quite fast. The mobile version would be easier in the sense that you don't actually need to move your mouse. Here, playing on a pc, it practically feels like a limitation where it actually takes time to switch the attitude.
I really liked the sound effects. The lack of ambience sounds was a bit weird. Music would probably ruin the atmosphere, but instead adding some other sound (e.g. wind howling) would help improve the atmosphere.
The graphics also gave this game so style of its own. The final baloon looked odd, but I guess that there is a certain charm to it in a way. It looks nice!
Really cool game! I thoroughly enjoyed it!