Metal Slug 3 Cheats

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Complete each achievement to get the allotted gamerscore. The numbers between the () is the points given for each achievement.
AchievementHow to unlock
Mission All Completed (10)Complete all the missions.
All Completed without Continue (25)Complete all the missions without continue.
Point Hunter (20)Achieve over 3,000,000 points.
Mission 1 Master (10)Complete Mission 1 without any miss.
Mission 2 Master (15)Complete Mission 2 without any miss.
Mission 3 Master (20)Complete Mission 3 without any miss.
Mission 4 Master (20)Complete Mission 4 without any miss.
Final Mission Master (40)Complete Final Mission without any miss.
Save President (10)Save President in the mission.
Hyakutaro Ichimonji (10)Save Hyakutaro Ichimonji.
No More Weapon (10)Complete any mission, without getting power-up items.
Strong Zombie (10)Defeat the Boss Enemy while the player is Zombie.
Verified by: this cheat is unverified Submitted by: intoxication on January 12, 2010