I think the game would be a lot better with tighter controls and the boomerang could use some more work. It can sometimes be a little frustrating.
The idea is great and clever! It perfectly fits the theme. I liked the sounds too and the art style was fun and fitting.
I know it's part of the story but its not the most rewarding when you complete the first level to meet with a you failed screen. This is just a personal preference, not a big problem.
Overall a fun little game that could use some more playtesting.