Defeat Widowmaker boss in single player
Defeat Tri-Orb boss in single player
Defeat Eliminator boss in single player
Defeat Turbo Tyrant boss in single player
Defeat Destructor boss in single player
Score 10 in single player
Score 50 in single player
Score 30 in single player
Score 100 in single player
Win without shields and power-ups vs. regular enemy in single player
Win in 4 seconds in single player
Win without reloading in single player
Unlock all bosses