losing money after end of round is annoying , and difficulty curve is too steep . going from single shot kills to needing 3-4 is a bit steep esp when you miss half the money lying about at the end of each round .
hold space and keep moving from top to bottom of screen . It's kind mind numbing just watching the ship going up and down spraying a never ending stream of bullets . Might be useful if you've got toothache though as a distraction .