Accomplish the indicated task to get Gamerscore points:
Score 100,000: Earn 100,000 points.
Score 250,000: Earn 250,000 points.
Score 500,000: Earn 500,000 points.
Score 1,000,000: Earn 1,000,000 points.
Survive 100,000: Earn 100,000 points without dying.
Survive 250,000: Earn 250,000 points without dying.
Survive 500,000: Earn 500,000 points without dying.
Survive 1,000,000: Earn 1,000,000 points without dying.
Pacifism: Survive the first 60 seconds of the game without firing or using a bomb.
Multitastic: Earn a 10x multiplier.
Mad Cat Skillz: Collect 9 lives.
Quatermaster: Collect 9 bombs.