During the development period the only person play testing my game was me. Now that I have gotten some feedback I realize that most new players treat the boomerang as a linear projectile weapon that comes back to you. That was not my intention with the game. The boomerang is supposed to orbit around the player killing targets as you dodge out of its path. The goal is to not catch the boomerang. The point system incentives you to kill as many Zombibers in one throw as possible. This is only possible if you keep the boomerang air born between Mobs.
Here is an animated gif of how I meant it to be played:

The boomerang will accelerate towards you and it will also partially turn towards the mouse. By combining mouse and player movement you can direct the boomerang to specific targets. The challenge of this game is not killing Zombibers but getting the most points by killing them with style.