Space Invaders/Walkthrough

You start off in a small ship, with three barriers between you and the aliens that you can and should occasionally take refuge in. Be warned, however, that these barriers are not invulnerable, and will eventually be shot to pieces by either the aliens or you (yes, you can destroy them too). What is usually a good strategy is to rather than hold the fire button, get into position, then hit the fire button rapidly, and move to a barrier, giving yourself covering fire. You can only have one shot on the screen at once, so make sure that there are enemies in your line of fire.