I've changed the controls, so that you can choose to use the keyboard or mouse. Keyboard: W/S to move Forward/Backward A/D to Rotate CCW/CW Space Bar to Fire Arrow Keys work, too, in pretty much the same way. Mouse: The ship follows the mouse. Line it up, and Click to Fire
Updated, or second attempt, version of my game for the "Scratch Newbie Championship" More info here: http://scratch.mit.edu/studios/212426/ There are now five different bonuses. Tip: The mouse is probably much easier than the keyboard.