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=>Bonuses: You can earn a 5000 point bonus on levels 1 through 4 if you don't
use Ninja Magic, and a 20,000 point bonus if you don't use shurikens or
bullets.
=>Hostage Bonuses: Resuing a standard hostage will grant a point bonus, but
the points given are dependent on the hundreds digit of your score.
Digits 0/1/2 give a 1,000 point bonus; digits 3/4/5/6 give a 500 point
bonus; digits 7/8/9 give a 200 point bonus.
Note that points are not awarded for rescuing hostages who grant you a
power-up item.
=>Hostage Extra Lives: If the three digits before the final digit of your
score are identical (13330, 25550, etc.) when you rescue certain hostages,
you'll receive an extra life instead of points. The special hostages are
listed below.
* Stage 2-2: Second hostage.
* Stage 2-3: First hostage.
* Stage 3-1: First hostage.
* Stage 3-2: Fifth hostage.