Completed all 4 scenes
Completed all 4 scenes with Robo Suit 1
Completed all 4 scenes with Robo Suit 2
Completed all 4 scenes without continuing (any character)
Finished the scene without losing a life
Defeated the final robot with Dexter
Finished the game in Robo Suit 1
Finished the game in Robo Suit 2
Killed robot boss without losing a life
Defeated final robot without continuing
Finished any level without shooting
Only grab the codes in the first level (no kills)
Beat the default high score
Scored over 100K points
Scored over 250,000 points
Scored over 400,000 points