Use your two guns wisely to destroy the aliens.
Keep them together for a single shot, or split them and catch enemies in the crossfire.
Hitting enemies from two sides causes double damage and earns bonuses.
SPACE to shoot. Left and Right arrows to move around the outside of the screen.
Up or Down arrow toggles SPLIT or GROUPED mode.
Protect the pipeline from the mining lasers.
Destroy the Aliens.
Shoot the targets from two sides in the bonus round.
Kill the bosses!