Beat all 10 levels. Each level: score 3 hits before time runs out.
Final Score = Base Score x Miss Multiplier x Restart Multiplier
Restart Multiplier (Restart Level clicks): (0=x3.0, 1=x2.9, 2=x2.8, ... , 20+=x1.0)
Big Target - Target temporarily grows.
Time Extension - Adds extra time.
Extra Bullets - Gives additional bullets.
Slow Time - Timer ticks slower.
Power-up shots do NOT consume bullets and do NOT affect your level bonus attempts.
Good luck, have fun - and thank you for your attention to this matter!