Beat Airplanes Easier
After you've beaten all of the airplanes (and the ship comes) go to the upper left hand corner. Then begin firing at the ship while moving right.
Note: The ship will take about 8 hits.
Easy Points
To get easy points, first build your sheilds up to about 6 or 7. Then fight 4 small (star) ships and 1 big (star) ship. Small ships are worth 400 points and the big ones are 500.
Note: This counts only if you haven't beat any countries.