The game's best features are its retro aesthetic and music (I really like the retro screen effect; any game that uses it looks more professional to me). The music is top-notch, and the ability to throw boomerangs with considerable, versatile range encourages strategic thinking rather than forcing you to get too close to enemies. The design is simple—which is understandable given the limited time available to create the map and enemies—so bringing in a skilled designer down the line would be a great idea if the plan is to keep updating the game instead of leaving it as just a demo. It has high potential. Keep it up.