Game is cool. Hitboxes seemed a bit unfair. The screen is too big with too much clutter, and elements that do nothing. Does the highscore board need to be visible in-game? The ui elements on the top left and bottom left seem to do nothing. Enemies are all the same just with varying sizes and speeds, have some do different movement patterns!
Not sure what the poweups do, if anything. Keep up the good work.